Theoretische Quantenphysik

Publications

of Gernot Alber

Miscellaneous

Gernot Alber, October 2012

Books

G.Alber, T. Beth, M. Horodecki, P. Horodecki, R. Horodecki, M. Rötteler, H. Weinfurter, R. Werner, A. Zeilinger, (Springer, Heidelberg, 2001), ISBN: 3-540-41666-8

Quantum Information: An Introduction to Theoretical Concepts and Experiments

Other scientific work

J. Novotny, G. Alber, I. Jex, Journal of Physics A 45, 485301 (2012)

Asymptotic Properties of Quantum Markov Chains

U. Seyfarth, G. M. Nikolopoulos, G. Alber, Physical Review A 85, 022342 (2012)

Symmetries and security of a quantum-public-key encryption based on single-qubit rotations

T. Kiss, S. Vymetal, L.D. Toth, A. Gabris, I. Jex, G. Alber, Physical Review Letters 107, 100501 (2011)

Measurement-induced chaos with entanglement

J. Novonty, G. Alber, I. Jex, Physical Review Letters 107, 090501 (2011)

Entanglement and decoherence: fragile and robust entanglement

J. Novonty, G. Alber, I. Jex, New Journal of Physics 13, 053052 (2011)

Asymptotic dynamics of qubit networks under randomly applied controlled unitary transformations

J. Novonty, G. Alber, I. Jex, Cent. Eur. J. Phys. 8, 1001 (2010)

Asymptotic evolution of random unitary operations

M. Stobinska, G. Alber, G. Leuchs, in Advances in Quantum Chemisty 60, 457-485, edited by C. A. Nicolaides, E. Braendas, J. R. Sabin (Acacemic Press, Amsterdam 2010) (ISBN: 978-0-12-380900-1)

Quantum electrodynamics of one-photon wave packets

M. Ali, A. R. P. Rau, G. Alber, Phys. Rev. A. 81, 042105 (2010)

Quantum discord for two-qubit X states

J. Novonty, G. Alber, I. Jex, J. Phys. A 42, 282003 (2009)

Random unitary danymics of quantum networks

M. Stobinska, G. Alber, G. Leuchs, EPL 86, 14007 (2009)

Perfect excitation of a matter qubit by a single photon in free space

Mazhar Ali, G. Alber, A. R. P. Rau, J. Phys. B 42, 025501 (2009)

Manipulating entanglement sudden death of two-qubit X-states in zero- and finite-temperature reservoirs

J. Wilms, Y. Disser, G. Alber, I.C.Percival, Phys. Rev. A 78, 032116 (2008)

Local realism, detection efficiencies, and probability polytopes

A.R.P.Rau, M. Ali, G. Alber, Eur. Phys. Lett. 82, 40002 (2008)

Hastening, delaying, or averting sudden death of quantum entanglement

D. Geberth, O. Kern, G. Alber, I. Jex, Eur. Phys. J. D 46, 381 (2008)

Stabilization of quantum information by combined dynamical decoupling and detected-jump error correction

T. Kiss, I. Jex, G. Alber, E. Kollar, Int. J. Quant. Inf. 6, 695-700 (2008)

Properties of complex chaos in conditional qubit dynamics

J. Novotny, G. Alber, I. Jex, Phys. Rev. A 75, 042309 (2007)

Network implementation of covariant two-qubit quantum operations

G. Alber and G. M. Nikolopoulos, in Lectures on Quantum Information, edited by D. Bruss and G. Leuchs, p 555ff (Wiley-VCH, Weinheim, 2007); ISBN: 978-3-527-40527-5

Quantum electrodynamics of a qubit

K. S. Ranade and G. Alber, J. Phys. A 40, 139 (2007)

Asymptotic correctability of Bell-diagonal qudit states and lower bounds on tolerable error probabilities in quantum cryptography

T. Kiss, I. Jex, G. Alber, and S. Vymetal, Acta Phys. Hung. B 26/3-4, 229 (2006)

Complex chaox in conditional qubit dynamics and purification protocols

T. Kiss, I. Jex, G. Alber, and S. Vymetal, Phys. Rev. A 74, 040301 (R) (2006)

Complex chaos in the conditional dynamics of qubits

A. Khalique, G. Nikolopoulos, and G. Alber, Eur. Phys. J. D 40, 453 (2006)

Postponement of dark-count effects in practical quantum key-distribution by two-way post-processing

J. Novotny, G. Alber, and I. Jex, Phys. Rev. A 73, 062311 (2006)

Completely positive covariant two-qubit quantum processes and optimal quantum NOT operations for entangled qubit pairs

O. Kern and G. Alber, Phys. Rev. A 73, 062302 (2006)

Selective recoupling and stochastic dynamical decoupling

G. M. Nikolopoulos, K. S. Ranade, and G. Alber, Phys. Rev. A 73, 032325 (2006)

Error tolerance of two-basis quantum-key-distribution protocols using qudits and two-way classical communication

K. S. Ranade and G. Alber, J. Phys. A 39, 1701 (2006)

Asymptotic correctability of Bell-diagonal quantum states and maximum tolerable bit-error rates

G. M. Nikolopoulos, A. Khalique, and G. Alber, Eur. Phys. J. D 37, 441 (2006)

Provable entanglement and information cost for qubit-based quantum key-distribution protocols

O.Kern and G. Alber, Phys. Rev. Lett. 95, 250501 (2005)

Controlling quantum systems by embedded dynamical decoupling schemes

O. Kern and G. Alber, Eur. Phys. J. D 36, 241 (2005)

Suppressing decoherence of quantum algorithms by jump codes

G. Nikolopoulos and G. Alber, Phys. Rev. A 72, 032320 (2005)

Security bound of two-basis quantum-key- distribution protocols using qudits

J. Novotný, G. Alber, and I. Jex, Phys. Rev. A 71, 042332 (2005)

Optimal copying of entangled two-qubit states

O. Kern, G. Alber, and D. L. Shepelyansky, Eur. Phys. J. D 32, 153 (2005)

Quantum error correction of coherent errors by randomization

O. Zobay, G. Metikas, and G. Alber, Phys. Rev. A 69, 063615 (2004)

Phase transition of interacting Bose gases in general power-law potentials

G. Alber und I. Jex, Physik Journal 3 (4), 19 (2004)

Wo beginnt die Quantenwelt?

G. Alber und Th. Walther, Thema Forschung 1, 44 (2004)

Quanteninformationsverarbeitung - Prüfstein für IT-Sicherheit

G. Metikas, O. Zobay, and G. Alber, Phys. Rev. A 69, 043614 (2004)

Phase transition of trapped interacting Bose gases and the renormalization group

G. Metikas, O. Zobay, and G. Alber, J. Phys. B 36, 4595 (2003)

The epsilon-expansion in the symmetry-broken phase of an interacting Bose gas at finite temperature

G. Alber, Th. Beth, Ch. Charnes, A. Delgado, M. Grassl, and M. Mussinger, Phys. Rev. A 68, 012316 (2003)

Detected jump-error correcting quantum codes, quantum error designs and quantum computation

I. Jex, G. Alber, S. M. Barnett, and A. Delgado, Prog. Phys. 51, 172 (2003)

Antisymmetric multi-partite quantum states and their applications

Th. Beth, Ch. Charnes, M. Grassl, G. Alber, A. Delgado, and M. Mussinger, Designs, Codes and Cryptography 29, 51 (2003)

A new class of designs which protect against quantum jumps

G. Alber, M. Mussinger, and A. Delgado, in Quantum Information Technology, edited by Th. Beth and G. Leuchs, p. 31ff (Wiley-VCH, Berlin, 2003)

Quantum information processing and error correction with jump codes

W. T. Strunz, G. Alber, and F. Haake, Physik Journal 1 (11), 47 (2002)

Dekohärenz in offenen Quantensystemen - Von den Grundlagen der Quantenmechanik zur Quantentechnologie

G. Metikas and G. Alber, J. Phys. B 35, 4223 (2002)

Non-analytic vertex renormalization of a Bose gas at finite temperature

B. Eggers and G. Alber, J. Phys. B 34, 4053 (2001)

Stochastic dynamics of electronic wave packets in fluctuating laser fields

G. Alber, A. Delgado, N. Gisin, and I. Jex, J. Phys. A 34, 8821 (2001)

Efficient bipartite quantum state purification in arbitrary dimensional Hilbert spaces

G. Alber and G. Metikas, Appl. Phys. B 73, 773 (2001)

Renormalization group analysis of a confined, interacting Bose gas

G. Alber, A. Delgado, and I. Jex, Quantum Information and Computation (QIC) 1, 33 (2001)

Optimal universal two-particle entanglement processes in arbitrary dimensional Hilbert spaces

G. Alber, A. Delgado, and M. Mussinger, Prog. Phys. 49, 901 (2001)

Quantum error correction and quantum computation with detected-jump correcting quantum codes

G. Alber, M. Mussinger, and A. Delgado, Proc. SPIE 4429, 37 (2001)

Dynamical stabilization of Grover's algorithm with embedded quantum codes

G. Alber, in Quantum Information : An Introduction to Theoretical Concepts and Experiments, p.1 (Springer, Heidelberg, 2001)

From the foundations of quantum theory to quantum technology

G. Alber, Th. Beth, Ch. Charnes, A. Delgado, M. Grassl, and M. Mussinger, Phys. Rev. Lett. 86, 4402 (2001)

Stabilizing distinguishable qubits against spontaneous decay by detected-jump correcting quantum codes

G. Alber, Phys. Rev. A 63, 023613 (2001)

Thermodynamic properties of confined interacting Bose gases - a renormalization group approach

F. Saif, G. Alber, V. Savichev and W. P. Schleich, Journal of Optics B: Quantum and Semiclassical Optics 2, 668 (2000)

Quantum revivals in a periodically driven gravitational cavity

M. Mussinger, A. Delgado and G. Alber, New Journal of Physics 2, 19.1 (2000)

Error avoiding quantum codes and dynamical stabilization of Grover's algorithm

G. Alber and O. Zobay, in Quantum Communication, Computing and Measurement 2, p. 187, edited by P. Kumar, G. M. D'Ariano and O. Hirota (Kluwer, Dordrecht, 2000)

Probing quantum states of Rydberg electrons by half-cycle pulses

I. Jex and G. Alber, J. Phys. B 33, 1663 (2000)

Wave packet dynamics of rotational states of the C₆₀ molecule

G. Alber, in The Physics and Chemistry of Wave Packets, p. 131 ff, edited by J. A. Yeazell and T. Uzer (Wiley, N. Y., 2000)

Destruction of quantum coherence and wave packet dynamics

G. Alber und M. Freyberger, Phys. Bl. 55(10), 23 (1999)

Quantenkorrelationen und Bellsche Ungleichungen - von der Grundlagenforschung zur technologischen Anwendung

G. Alber, in Proceedings of the X International Symposium on Theoretical Electrical Engineering ISTET 99, edited by W. Mathis and T. Schindler, (Otto-von-Guericke-University Magdeburg, Magdeburg, 1999); quant-ph/9907104

Entanglement and the linearity of quantum mechanics

O. Zobay and G. Alber, Phys. Rev. A 60, 1314 (1999)

Excitation of weakly bound Rydberg electrons by half-cycle pulses

G. Alber and O. Zobay, Phys. Rev. A 59, R3174 (1999)

Semiclassical interferences and catastrophes in the ionization of Rydberg atoms by half cycle pulses

B. Eggers and G. Alber, J. Phys. B 32, 1019 (1999)

Autoionization and stochastic diffusion of Rydberg electrons in fluctuating laser fields

M. Rigo, G. Alber, F. Mota-Furtado and P. F. O' Mahony, Phys. Rev. A 58, 478 (1998)

Measurement-induced quantum fluctuations and bistability of a relativistic electron in a Penning trap

O. Zobay and G. Alber, Progress of Physics 46, 3 (1998)

Dynamics of electronic Rydberg wave packets in the presence of laser-induced core transitions

G. Alber and B. Eggers, Optics Express 1, 203 (1997)

Destruction of quantum coherence and stochastic ionization of Rydberg electrons by fluctuating laser fields

O. Zobay and G. Alber, Phys. Rev. A 56, 3897 (1997)

Laser-modified electron correlations and deflection of atoms by laser light

G. Alber and B. Eggers, Phys. Rev. A 56, 820 (1997)

Rydberg electrons in intense fluctuating laser fields

M. Rigo, G. Alber, F. Mota-Furtado and P. F. O' Mahony, Phys. Rev. A 55, 1665 (1997)

The quantum state diffusion model and the driven damped nonlinear oscillator

O. Zobay and G. Alber, Phys. Rev. A 54, 5361 (1996)

Spontaneous photon emission in isolated-core excited Rydberg systems and dynamics of electronic wave packets

M. W. Beims and G. Alber, J. Phys. B 29, 4139 (1996)

Bifurcations of electronic Rydberg wave packets and core scattering

T. Steimle and G. Alber, Phys. Rev. A 53, 1982 (1996)

The continuous Stern-Gerlach effect and the quantum state diffusion model of state reduction

T. Steimle, G. Alber and I. C. Percival, J. Phys. A 28, L491 (1995)

Mixed classical-quantal representation for open quantum systems

O. Zobay and G. Alber, Phys. Rev. A 52, 541 (1995)

Dynamics of electronic Rydberg wave packets in isolated core excited atoms

G. Alber, W. T. Strunz and O. Zobay, Mod. Phys. Lett. B 8, 1461 (1994)

The mechanical action of laser light on Rydberg atoms

G. Alber and W. T. Strunz, Phys. Rev. A 50, R3577 (1994)

Atom-optical gratings induced by multiphoton excitation of electronic Rydberg wave packets

Th. Steimle, G. Alber and J. S. Briggs, Z. Phys. D 29, 21 (1994)

Quantum dynamics of a charged particle in a Penning trap

G. Kracke, G. Alber and J. S. Briggs, J. Phys. B 26, L561 (1993)

Two-photon bremsstrahlung in electron collisions with noble gas atoms

O. Zobay and G. Alber, J. Phys. B 26, L539 (1993)

Periodic orbits and molecular photoabsorption

M. W. Beims and G. Alber, Phys. Rev. A 48, 3123 (1993)

Bifurcations of electronic trajectories and dynamics of electronic Rydberg wave packets

W. T. Strunz, G. Alber and J. S. Briggs, J. Phys. A 26, 5157 (1993)

Discrete symmetries and semiclassical quantization

G. Alber, Laser Physics 3, 682 (1993)

Electronic wave packets and deflection of atoms by intense laser fields

G. Alber, Phys. Rev. Lett. 69, 3045 (1992)

Diffraction of Rydberg atoms by laser light

G. Alber, Phys. Rev. A 46, R5338 (1992)

Photon wave packets and spontaneous decay in a cavity

G. Alber and P. Zoller, Contemporary Physics 32, 185 (1991)

Laser-induced exication of electronic Rydberg wave packets

W. T. Strunz, G. Alber and J. S. Briggs, J. Phys. B. 24, 5091 (1991)

Semiclassical description of wave packet dynamics in a double-minimum potential

G. Alber, Comm. At. Mol. Phys.D 26, 47 (1991)

Rydberg wave packets in external static fields

G. Alber and P. Zoller, Phys. Rep. 199, 231 (1991)

Laser excitation of electronic wave packets in Rydberg atoms

D. R. Meacher, A. Charlton, P. Ewart, J. Cooper, and G. Alber, Phys. Rev. A. 42, 3018 (1990)

Degenerate four-wave mixing with broad-bandwidth pulsed lasers

W. Strunz, G. Alber and J. S. Briggs, J. Phys. B. 23, L1 (1990)

Semiclassical treatment of time-dependent molecular dynamics

G. Alber und P. Zoller, Phys. Bl. 45, 477 (1989)

Laseranregung elektronischer Wellenpakete in Rydberg-Atomen

G. Alber, Z. Phys. D. 14, 307 (1989)

Coherent laser excitation of Rydberg states in a weak static magnetic field

H. Gratl, G. Alber and P. Zoller, J. Phys. B. 22, L547 (1989)

Near-threshold behaviour of multiphoton ionization probabilites

J. Cooper, A. Charlton, D. R. Meacher, P. Ewart and G. Alber, Phys. Rev. A 40, 5705 (1989)

Revised theory of resonant degenerate four-wave mixing with broad-bandwidth lasers

G. Alber, Phys. Rev. A 40, 1321 (1989)

Laser excitation of Stark-induced resonances

G. Alber, Th. Haslwanter and P. Zoller, J. Opt. Soc. Am. B 5, 2439 (1988)

One-photon resonant two-photon excitation of Rydberg series close to threshold

G. Alber and P. Zoller in Atomic and Molecular Processes with Short and Intense Laser Fields, edited by A. D. Bandrauk, p.97ff (Plenum, New York, 1988)

Rydberg states in laser fields

G. Alber and P. Zoller, Phys. Rev. A 37,377 (1988)

Near-threshold excitation of Rydberg series by strong laser fields

P. Zoller, G. Alber and A. Giusti-Suzor in Electronic and Atomic Collisions, edited by H. B. Gilbody, W. R. Newell, F. H. Read and A. C. H. Smith, p.557ff   (Elsevier,New York, 1988)

A quantum-defect theory of Rydberg electrons in laser fields

P. Zoller, G. Alber and H. Ritsch in Proceedings of the Fourth International Symposium on Quantum Optics, Hamilton, New Zealand (Springer, Berlin, 1986)

Rydberg states in laser fields: wave packets and near threshold phenomena

G. Alber, H. Ritsch and P. Zoller, Phys. Rev. A 34, 1058 (1986)

Generation and detection of Rydberg wave packets by short laser pulses

J. F. Kelly, J. P. Hessler and G. Alber, Phys. Rev. A 33, 3913 (1986)

Experimental studies of three-photon ionization of Ba: Evidence of channel interference and Raman coupling

G. Alber and J. Cooper, Phys. Rev. A 33, 3084 (1986)

Master equation approach to collisionally induced absorption and emission

G. Alber and J. Cooper, Phys. Rev. A 32, 2186 (1985)

Intensity effects in two-photon collisional redistribution of radiation

G. Alber, in Fundamentals of Laser Interactions I, Lecture Notes in Physics 229, edited by F. Ehlotzky, p. 92ff (Springer, Berlin, 1985)

Two-photon collisional redistribution of radiation

G. Alber and J. Cooper, Phys. Rev. A 31, 3644 (1985)