Publications

Publications by the Lundbeck Foundation Theoretical Center for Quantum System Research

Submitted

• M. Saffman, T. G. Walker, K. Mølmer, Quantum information with Rydberg atoms; submitted to Rev. Mod. Phys., September 2009; arXiv:0909.4777
• Shengjun Wu, Klaus Mølmer, Weak measurements with a qubit meter; submitted to Physics Letters A; arXiv:0909.0841
• Shengshi Pang and Shengjun Wu, Optimum Unambiguous Discrimination of Linearly Independent Pure States; submitted to Phys. Rev. A.; arXiv:0906.2990[quant-ph]
• Hua Wu, Richard E. George, Arzhang Ardavan, Janus H. Wesenberg, Klaus Mølmer, David I. Schuster, Robert J. Schoelkopf, Kohei M. Itoh, John J. L. Morton, G. Andrew D. Briggs, Storage of multiple coherent microwave excitations in an electron spin ensemble; submitted for publication; arXiv:0908.0101
• Anne E. B. Nielsen, Fighting decoherence in a continuous two-qubit odd/even parity measurement with a closed loop setup; submitted to Phys. Rev. A; arXiv:0908.0817.
• Christian Bergenfeldt, Klaus Mølmer, Cooling a micro-mechanical resonator to its ground state by measurement back-action; submitted for publication; arXiv:0906.1909
• Henriette Astrup Leth, Lars Bojer Madsen and Klaus Mølmer, Monte Carlo wave packet theory of dissociative double ionization; submitted to Phys. Rev. Lett.
• Anne E. B. Nielsen, Asa S. Hopkins and Hideo Mabuchi, Quantum filter reduction for measurement-feedback control via unsupervised manifold learning; submitted to New Journal of Physics; arXiv:0905.1139.
• Darko Dimitrovski, Morten Førre, and Lars Bojer Madsen, Strong-field, short-pulse nondipole dynamics; submitted to Phys. Rev. Lett.

Published in 2009 (25)

• Shengjun Wu, Uffe V. Poulsen, Klaus Mølmer, Correlations in local measurements on a quantum state; Phys. Rev. A 80, 032319 (2009); arXiv:0905.2123.
• Jan Conrad Baggesen and Lars Bojer Madsen, Secondary electron cascade in attosecond photoelectron spectroscopy from metals; Phys. Rev A 80, 030901(R) (2009).
• J. H. Wesenberg, A. Ardavan, G. A. D. Briggs, J. J. L. Morton, R. J. Schoelkopf, D. I. Schuster, K. Mølmer, Quantum computing with an electron spin ensemble; Phys. Rev. Lett. 103, 070502 (2009); arXiv:0903.3506.
• N. T. Zinner, K. Mølmer, C. Özen, D. J. Dean and K. Langanke, Shell-Model Monte Carlo Simulations of BCS-BEC Crossover in Few-Fermion Systems; Phys. Rev. A 80, 013613 (2009); arXiv:0903.2263.
• M. Abu-samha and L. B. Madsen, Theory of strong-field ionization of aligned CO₂; Phys. Rev. A 80, 023401 (2009); arxiv:0906.0914
• C.P.J. Martiny, M. Abu-samha and L.B. Madsen, Counterintuitive angular shifts in the photoelectron momentum distribution for atoms in strong few-cycle circularly polarized laser pulses; J. Phys. B. At. Mol. Opt. Phys. 42 161001 (2009).
• C. B. Madsen, L. B. Madsen, S. S. Viftrup, M. P. Johansson, T. B. Poulsen, L. Holmegaard, V. Kumarappan, K. A. Jørgensen, H. Stapelfeldt, A combined experimental and theoretical study on realizing and using laser controlled torsion of molecules; J. Chem. Phys. 130, 234310 (2009); arxiv:0903.4463.
• Mark Saffman and Klaus Mølmer, Efficient multiparticle entanglement via asymmetric Rydberg blockade; Phys. Rev. Lett. 102, 240502 (2009); arXiv:0812.2425.
• O. Søe Sørensen, N. Nygaard, P. B. Blakie, Adiabatic cooling of a tunable Bose-Fermi mixture in an optical lattice; Phys. Rev. A 79, 063615 (2009); arXiv:0901.3625v1.
• J. Fernández and L.B. Madsen, Above threshold ionization, energy-resolved photoelectron angular distributions and momentum distributions of H₂⁺ in intense, femtosecond laser pulses; Phys. Rev. A 79, 063406 (2009). PRA Kaleidoscope Images: June 2009
• K. J. Challis, N. Nygaard, and K. Mølmer, Scattering Resonances in a Degenerate Fermi Gas; Phys. Rev. A 79, 052701 (2009); arXiv:0811.4282.
• O. Søe Sørensen, N. Nygaard and P. B. Blakie, Statistical mechanics of a Feshbach coupled Bose-Fermi gas in an optical lattice; Phys. Rev. A 79, 053601 (2009); arXiv:0810.2696v1.
• J. Fernández and L. B. Madsen, Alignment dependence in above threshold ionisation of H₂⁺: role of intermediate resonances; J. Phys. B. At. Mol. Opt. Phys. 42 085602 (2009).
• Lars Bojer Madsen, Isotopic scaling in strong-field dissociation by few-cycle pulses; Phys. Rev. A 79, 043405 (2009).
• Michael Klaiber, Darko Dimitrovski, and John S. Briggs, Magnus expansion for laser-matter interaction: Application to generic few-cycle laser pulses; Phys. Rev. A 79, 043402 (2009).
• M. Saunders, P. L. Halkyard, S. A. Gardiner, and K. J. Challis, Fractional resonances in the atom-optical δ-kicked accelerator; Phys. Rev. A 79, 023423 (2009).
• Søren Gammelmark, Klaus Mølmer, Quantum learning by measurement and feedback; New J. Phys. 11 033017 (2009); arXiv.org/abs/0803.1418.
• Anne E. B. Nielsen, Uffe V. Poulsen, Antonio Negretti, Klaus Mølmer, Atomic quantum superposition state generation via optical probing; Phys. Rev. A 79, 023841 (2009); arXiv:0812.4048.
• Viacheslav P. Belavkin, Antonio Negretti, Klaus Mølmer, Dynamical programming of continuously observed quantum systems; Phys. Rev. A, 79, 022123 (2009); http://arxiv.org/abs/0805.4741.
• Shengjun Wu, Sixia Yu, Klaus Mølmer, Complementarity of information sent via different bases; Phys. Rev. A 79, 022320 (2009); arXiv:0811.2312.
• C.B. Madsen, L.B. Madsen, S.S. Viftrup, M. P. Johansson, T.B. Poulsen, L. Holmegaard, V. Kumarappan, K.A. Jørgensen, H. Stapelfeldt, Manipulating the Torsion of Molecules by Strong Laser Pulses; Phys. Rev. Lett. 102, 073007 (2009); arXiv.org/abs/0809.2935.
• K. Van Houcke, S. M. A. Rombouts, K. Heyde, and Y. Alhassid Microscopic calculation of symmetry projected nuclear level densities; Phys. Rev. C 79, 024302 (2009).
• Shengjun Wu, Sixia Yu, Klaus Mølmer, Entropic uncertainty relation for mutually unbiased bases; Phys. Rev. A 79, 022104 (2009); arXiv:0811.2298.
• Line Hjortshøj Pedersen and Klaus Mølmer, Few qubit atom-light interfaces with collective encoding; Phys. Rev. A 79, 012320 (2009); arXiv:0807.3610.
• J. Fernández and L.B. Madsen, Energy-resolved photoelectron angular distributions of H₂⁺ in intense femtosecond laser pulses; J. Phys. B: At. Mol. Opt. Phys. 42 021001 (2009); movie 1, movie 2; "europhysicsnews highlight, volume 40, number 2, page 14".

Published in 2008 (31)

• P.L. Halkyard, M. Saunders, S.A. Gardiner, and K.J. Challis Power-law behavior in the quantum-resonant evolution of the δ-kicked accelerator; Phys. Rev. A 78, 063401 (2008).
• M. Abu-samha, D. Dimitrovski and L. B. Madsen, The role of the atomic potential in the regime of strong-field tunnelling ionization. Imprints on longitudinal and 2D momentum distributions; J. Phys. B: At. Mol. Opt. Phys. 41, 245601 (2008).
• Line Hjortshøj Pedersen, Niels Martin Møller, and Klaus Mølmer, The distribution of quantum fidelities; Phys. Lett. A, 372, 7028–7032 (2008); arXiv:0807.4843.
• Darko Dimitrovski and Lars Bojer Madsen, Time dependence of ionization and excitation by few-cycle laser pulses; Phys. Rev. A 78, 043424 (2008).
• D. Dimitrovski and E.A. Solov'ev, Detachment from negative ions by an electric pulse: from symmetric to fully asymmetric momentum distribution; J. Phys. B: At. Mol. Opt. Phys. 41, 215003 (2008).
• C.P.J. Martiny and L.B. Madsen, Ellipticity dependence of the validity of the saddle-point method in strong-field ionization by few-cycle laser pulses; Phys. Rev. A 78, 043404 (2008).
• Rune T. Piil, Nicolai Nygaard, and Klaus Mølmer, Scattering and binding of different atomic species in a one-dimensional optical lattice; Phys. Rev. A 78, 033611 (2008); arXiv:0808.0120.
• J.C. Baggesen and L.B. Madsen, Theory for time-resolved measurements from metal surfaces; Phys. Rev. A 78, 032903 (2008). PRA Kaleidoscope Images: September 2008
• Michael Klaiber, Darko Dimitrovski and John S Briggs, The Magnus expansion for interaction of atoms with attosecond laser pulses; J. Phys. B: At. Mol. Opt. Phys. 41, 175002 (2008).
• Antonio Negretti, Carsten Henkel and Klaus Mølmer, Quantum fluctuations in the image of a Bose gas; Phys. Rev. A 78, 023630 (2008); arXiv:0807.0751v2.
• N. Nygaard, R. Piil, and K. Mølmer, Two-channel Feshbach physics in a structured continuum; Phys. Rev. A 78 023617 (2008); arXiv:0802.3808.
• L. B. Madsen and D. Dimitrovski, Time-resolved subcycle dynamics: Importance of physical fields and gauge invariance; Phys. Rev. A 78 023403 (2008).
• Rune Lausten, Olga Smirnova, Benjamin J. Sussman, Stefanie Gräfe, Anders S. Mouritzen, and Albert Stolow, Time- and frequency-resolved coherent anti-Stokes Raman scattering spectroscopy with sub-25 fs laser pulses; J. Chem. Phys. 128, 244310 (2008).
• M.A. Cirone, A. Negretti, A. Recati, and T. Calarco, Complexity, noise and quantum information on atom chips; Int. J. Quantum Inf. 6, 633 (2008).
• M. Abu-samha and L. B. Madsen, From multiphoton to tunnelling ionization of neon and argon; J. Phys. B: At. Mol. Opt. Phys. 41, F151001 (2008). Part of Journal of Physics B's Highlights of 2008.
• Mark Saffman and Klaus Mølmer, Scaling the neutral atom Rydberg gate quantum computer by collective encoding in Holmium atoms; Phys. Rev. A 78, 012336 (2008); arXiv:0805.0440.
• Karl Tordrup, Antonio Negretti, and Klaus Mølmer, Holographic quantum computing; Phys. Rev. Lett. 101, 040501 (2008); arXiv:0802.4406. nature highlight , nature photonics highlight.
• Anne E. B. Nielsen and Klaus Mølmer, Atomic spin squeezing in an optical cavity; Phys. Rev. A 77, 063811 (2008); arXiv:0805.0482.
• Anne E. B. Nielsen and Klaus Mølmer, Stochastic master equation for a probed system in a cavity; Phys. Rev. A 77, 052111 (2008); arXiv:0802.1225.
• Ditte Møller, Lars Bojer Madsen, and Klaus Mølmer, Quantum Gates and Multiparticle Entanglement by Rydberg Excitation Blockade and Adiabatic Passage; Phys. Rev. Lett. 100, 170504 (2008); arXiv:0802.3631.
• Antonio Negretti, Carsten Henkel and Klaus Mølmer, Quantum-limited position measurements of a dark matter-wave soliton ; Phys. Rev. A 77, 043606 (2008); arXiv:0712.1543.
• Etienne Brion, Line Hjortshøj Pedersen, Mark Saffman, Klaus Mølmer, Error correction in ensemble registers for quantum repeaters and quantum computers; Phys. Rev. Lett. 100, 110506 (2008); arXiv:0710.1717.
• Vinod Kumarappan, Lotte Holmegaard, Christian Martiny, Christian B. Madsen, Thomas K. Kjeldsen, Simon S. Viftrup, Lars Bojer Madsen, and Henrik Stapelfeldt, Multiphoton electron angular distributions from laser-aligned CS₂ molecules; Phys. Rev. Lett. 100, 093006 (2008).
• Klaus Mølmer, A. Perrin, V. Krachmalnicoff, V. Leung, D. Boiron, A. Aspect, C.I. Westbrook, Hanbury Brown and Twiss correlations in atoms scattered from colliding Condensates ; Phys. Rev. A 77, 033601 (2008); arXiv:0710.0208.
• T. P. Simula, M. J. Davis, and P. B. Blakie, Superfluidity of an interacting trapped quasi-two-dimensional Bose gas; Phys. Rev. A 77, 023618 (2008).
• L. H. Pedersen, C. Rangan, Controllability and universal three-qubit quantum computation with trapped electron states; Quantum Information Processing - online (2008); arXiv:0705.2256.
• Marcelo F. Ciappina and Lars Bojer Madsen, Laser-assisted ion-atom collisions: Plateau, cutoff, and multiphoton peaks; Phys. Rev. A 77, 023412 (2008).
• Karl Tordrup and Klaus Mølmer, Quantum computing with a single molecular ensemble and a Cooper pair box; Phys. Rev. A 77, 020301(R) (2008).; arXiv:0711.0606.
• Ditte Møller, Lars Bojer Madsen, Klaus Mølmer, Geometric phases in open tripod systems; Phys. Rev. A 77, 022306 (2008).
• N. Nygaard, R. Piil, and K. Mølmer, Feshbach molecules in a one-dimensional optical lattice; Phys. Rev. A 77, 021601(R) (2008); arXiv:0708.2329.
• T.P. Simula, N. Nygaard, S. X. Hu, L. A. Collins, B. I. Schneider and Klaus Mølmer, Angular momentum exchange between coherent light and matter field; Phys. Rev. A 77, 015401 (2008); cond-mat/0707.3698.

Published in 2007 (38)

• E. Brion, K. Mølmer, M. Saffman, Quantum computing with collective ensembles of multi-level systems ; Phys. Rev. Lett. 99, 260501 (2007); quant-ph/0708.1386
• Tapio Simula, Atom Muradyan, and Klaus Mølmer, Atomic diffraction in counter-propagating Gaussian pulses of laser light; Phys. Rev. A 76, 063619 (2007); arXiv: 0710.0766.
• L.B. Madsen, L.A.A. Nikolopoulos, T.K. Kjeldsen, and J. Fernández, Extracting continuum information from Ψ(t) in time-dependent wave packet calculations; Phys. Rev. A 76, 063407 (2007).
• Anne E. B. Nielsen and Klaus Mølmer, Transforming squeezed light into large amplitude Schrödinger cat states; Phys. Rev. A 76, 043840 (2007); arXiv:0708.1956.
• Jesper Fevre Bertelsen and Klaus Mølmer, Association of heteronuclear molecules in a harmonic oscillator well; Phys. Rev. A 76, 043615 (2007); cond-mat/0706.4218.
• Shohei Watabe, Tetsuro Nikuni, Nicolai Nygaard, James E. Williams, and Charles W. Clark, Adiabatic Phase Diagram of an Ultracold Atomic Fermi Gas with a Feshbach Resonance; Journal of the Physical Society of Japan 76, 064003 (2007).
• Anne E. B. Nielsen and Klaus Mølmer, Multimode analysis of the light emitted from a pulsed optical parametric oscillator; Phys. Rev. A 76, 033832 (2007); quant-ph/0706.4159.
• M. Førre, J.P. Hansen, L. Kocbach, S. Selstø, T.K. Kjeldsen and L.B. Madsen, Atoms and molecules in intense attosecond fields: beyond the dipole approximation, Journal of Physics: Conference Series 88, 012049 (2007).
• Antonio Negretti, Uffe V. Poulsen, and Klaus Mølmer, Quantum Superposition State Production by Continuous Observations and Feedback; Phys. Rev. Lett. 99, 223601 (2007); quant-ph/0703040
• C. B. Madsen and L. B. Madsen, Theoretical studies of high-harmonic generation: Effects of symmetry, degeneracy and orientation; Phys. Rev. A 76, 043419 (2007).
• C. P. Juul Martiny and L. B. Madsen, Finite bandwidth and carrier envelope phase difference effects in strong-field ionization of atoms by few-cycle circularly polarized laser pulses; Phys. Rev. A 76, 043416 (2007).
• C.B. Madsen, A.S. Mouritzen, T.K. Kjeldsen, L.B. Madsen, Effects of orientation and alignment in high-harmonic generation and above threshold ionization; Phys. Rev. A 76, 035401 (2007).
• M. Førre, S. Selstø, J. P. Hansen, T. K. Kjeldsen, and L. B. Madsen, Molecules in Intense XUV Pulses: Beyond the Dipole Approximation in Linearly and Circularly Polarized Fields; Phys. Rev. A 76, 033415 (2007).
• H.A. Leth, L.B. Madsen, J.F. McCann, Strong-field approximation for Coulomb explosion of H₂⁺ by short intense laser pulses; Phys. Rev. A 76, 033414 (2007).
• S. Watabe, T. Nikuni, N. Nygaard, J. E. Williams and C. W. Clark, Adiabatic Phase Diagram of a Degenerate Fermi Gas with a Feshbach Resonance; J Low Temp Phys 148: 435-440 (2007).
• L. A. A. Nikolopoulos, T. K. Kjeldsen, and L. B. Madsen, Three-dimensional time-dependent Hartree-Fock approach for arbitrarily oriented molecular hydrogen in strong electromagnetic fields; Phys. Rev A 76, 033402 (2007).
• E. Brion, A. S. Mouritzen and K. Mølmer, Conditional dynamics induced by new configurations for Rydberg dipole-dipole interactions; Phys. Rev. A 76, 022334 (2007); quant-ph/0706.0147
• Rune Piil, Klaus Mølmer, Tunnelling couplings in discrete lattices, single particle band structure and eigenstates of interacting atom pairs; Phys. Rev. A 76, 023607 (2007); cond-mat/0703573
• Uffe V. Poulsen and Klaus Mølmer, Pair correlated atoms with a twist; Phys. Rev. A. 76, 013614 (2007).
• Line Hjortshøj Pedersen, Niels Martin Møller and Klaus Mølmer, Fidelity of quantum operations; Physics Letters A 270, 47 (2007); quant-ph/0701138
• Kristian Rymann Hansen and Klaus Mølmer, Stationary light pulses in ultra cold atomic gasses; Phys. Rev. A. 75, 065804 (2007); quant-ph/0611073
• T. K. Kjeldsen, L. A. A. Nikolopoulos, and L. B. Madsen, Solving the m-mixing problem for the three-dimensional time-dependent Schrödinger equation by rotations: application to strong-field ionization of H₂⁺; Phys. Rev. A 75, 063427 (2007).
• L.A.A. Nikolopoulos, T.K. Kjeldsen, and L.B. Madsen, Spectral and partial-wave decomposition of time-dependent wave functions on a grid: photoelectron spectra of H and H₂⁺ in electromagnetic fields; Phys. Rev. A 75, 063426 (2007).
• Olga Smirnova, Anders S. Mouritzen, Serguei Patchkovskii and Misha Yu. Ivanov, Coulomb-laser coupling in strong-field assisted photo-ionization and molecular tomography; J. Phys. B. 40, F197-F206 (2007).
• Anne E. B. Nielsen and Klaus Mølmer, Conditional generation of path-entangled optical |N,0> + |0,N> states; Phys. Rev. A 75, 063803 (2007); quant-ph/0704.0397
• Ditte Møller, Lars Bojer Madsen, Klaus Mølmer, Geometric phase gates based on stimulated Raman adiabatic passage in tripod systems; Physical Review A 75, 062302 (2007); quant-ph/0701240
• Kristian Rymann Hansen, Klaus Mølmer, Trapping of light pulses in ensembles of stationary Lambda atoms; Phys. Rev. A 75, 053802 (2007); quant-ph/0701133
• Anne E. B. Nielsen, Klaus Mølmer, Photon number states generated from a continuous-wave light source; Phys. Rev. A 75, 043801 (2007); quant-ph/0612129
• E. Brion, L.H. Pedersen and K. Mølmer, Implementing a neutral atom Rydberg gate without populating the Rydberg state; J. Phys. B: At. Mol. Opt. Phys. 40 S159-S166 (2007).
• Karl Tordrup and Klaus Mølmer, Quantum-state reconstruction with imperfect rotations on an inhomogeneously broadened ensemble of qubits; Phys. Rev. A 75, 042318 (2007); quant-ph/0701140
• E. Brion, L. H. Pedersen, K. Mølmer, S. Chutia, and M. Saffman, Universal Quantum Computation in a Neutral Atom Decoherence Free Subspace; Phys. Rev. A 75, 032328 (2007); quant-ph/0611246
• L.A.A. Nikolopoulos and P. Lambropoulos, Time-dependent theory of double ionization of helium under XUV radiation; J. Phys. B: At. Mol. Opt. Phys. 40 1347-1357 (2007).
• Valentin N. Ostrovsky, Thomas Kim Kjeldsen and Lars Bojer Madsen, Comment on “Generalization of Keldysh’s theory”; Phys. Rev. A 75, 027401 (2007).
• Karl Tordrup and Klaus Mølmer, Effects of ground state hyperfine shifts in quantum computing with optically hole burnt materials; Phys. Rev. A 75, 022316 (2007); quant-ph/0609171
• Anne E.B. Nielsen and Klaus Mølmer, Single photon state generation from a continuous-wave non-degenerate optical parametric oscillator; Phys. Rev. A 75 023806 (2007); quant-ph/0611268
• L. Sælen, R. Nepstad, J.P. Hansen and L.B. Madsen, The N-dimensional Coulomb problem: Stark effect in hyperparabolic and hyperspherical coordinates; J. Phys. A: Math. Theor. 40 1097-1104 (2007).
• E. Brion, L.H. Pedersen and K. Mølmer, Adiabatic Elimination in a Lambda System; J. Phys. A: Math. Theor. 40, 1033-1043 (2007); quant-ph/0610056
• Thomas Kim Kjeldsen and Lars Bojer Madsen, Alignment dependent above threshold ionization of molecules; J. Phys. B: At. Mol. Opt. Phys. 40, 237-245 (2007).

All publications by LTC members can be found via this link.