747 citations · 2k across the 46 of their papers we have counts for
23 papers · 1 filter
Spontaneous emission and atomic line shift in causal perturbation theory
Karl-Peter Marzlin, Bryce Fitzgerald
We derive spontaneous emission rate and line shift for two-level atoms coupled to the radiation field using causal perturbation theory. In this approach, employing the theory of di…
The Moyal Equation for open quantum systems
Karl-Peter Marzlin, Stephen Deering
We generalize the Moyal equation, which describes the dynamics of quantum observables in phase space, to quantum systems coupled to a reservoir. It is shown that phase space observ…
On the connection between the theorems of Gleason and of Kochen and Specker
Karl-Peter Marzlin, Taylor Landry
We present an elementary proof of a reduced version of Gleason's theorem and the Kochen-Specker theorem to provide a novel perspective on the relation between both theorems. The pr…
Ramsey-Bordé interferometer for electrons
Karl-Peter Marzlin
A scheme to realize an electron interferometer using low-intensity, bi-chromatic laser pulses as beam splitter is proposed. The splitting process is based on a modification of the…
Quantum Collapse Bell Inequalities
Karl-Peter Marzlin, T. A. Osborn
We propose Bell inequalities for discrete or continuous quantum systems which test the compatibility of quantum physics with an interpretation in terms of deterministic hidden-vari…
Continuous-Variable Bell Inequalities in Phase Space
Karl-Peter Marzlin, T. A. Osborn
We propose a variation of Bell inequalities for continuous variables that employs the Wigner function and Weyl symbols of operators in phase space. We present examples of Bell ineq…
Uniform cross phase modulation for nonclassical radiation pulses
Karl-Peter Marzlin, Zeng-Bin Wang, Sergey A. Moiseev +1
We propose a scheme to achieve a uniform cross phase modulation (XPM) for two nonclassical light pulses and study its application for quantum non-demolition measurements of the pho…
Super- and subradiant emission of two-level systems in the near-Dicke limit
Peter G. Brooke, Karl-Peter Marzlin, James D. Cresser +1
We analyze the stability of super- and subradiant states in a system of identical two-level atoms in the near-Dicke limit, i.e., when the atoms are very close to each other compare…
Complementarity and uncertainty relations for matter wave interferometry
K. -P. Marzlin, B. C. Sanders, P. L. Knight
We establish a rigorous quantitative connection between (i) the interferometric duality relation for which-way information and fringe visibility and (ii) Heisenberg's uncertainty r…
Multi-particle decoherence free subspaces in extended systems
Raisa I. Karasik, Karl-Peter Marzlin, Barry C. Sanders +1
We develop a method to determine spatial configurations to realize decoherence-free subspaces for spatially extended multi-particle systems. We have assumed normal reservoir behavi…
Criteria for dynamically stable decoherence-free subspaces and incoherently generated coherences
Raisa I. Karasik, Karl-Peter Marzlin, Barry C. Sanders +1
We present a detailed analysis of decoherence free subspaces and develop a rigorous theory that provides necessary and sufficient conditions for dynamically stable decoherence free…
Large Cross-Phase Modulation between Slow Co-propagating Weak Pulses in Rb
Zeng-Bin Wang, Karl-Peter Marzlin, Barry C. Sanders
We propose a scheme to generate double electromagnetically induced transparency and optimal cross-phase modulation for two slow, copropagating pulses with matched group velocities…
Raman Adiabatic Transfer of Optical States
Juergen Appel, K. -P. Marzlin, A. I. Lvovsky
We analyze electromagnetically induced transparency and light storage in an ensemble of atoms with multiple excited levels (multi-Lambda configuration) which are coupled to one of…
Detection of atomic entanglement and electromagnetically induced transparency in velocity-selective coherent population trapping
M. Kiffner, K. -P. Marzlin
We investigate theoretically the optical properties of an atomic gas which has been cooled by the laser cooling method velocity-selective coherent population trapping. We demonstra…
Single-qubit optical quantum fingerprinting
Rolf T. Horn, S. A. Babichev, Karl-Peter Marzlin +2
We analyze and demonstrate the feasibility and superiority of linear optical single-qubit fingerprinting over its classical counterpart. For one-qubit fingerprinting of two-bit mes…
Geometric phase distributions for open quantum systems
K. -P. Marzlin, S. Ghose, B. C. Sanders
In an open system, the geometric phase should be described by a distribution. We show that a geometric phase distribution for open system dynamics is in general ambiguous, but the…
Inconsistency in the application of the adiabatic theorem
Karl-Peter Marzlin, Barry C. Sanders
The adiabatic theorem states that an initial eigenstate of a slowly varying Hamiltonian remains close to an instantaneous eigenstate of the Hamiltonian at a later time. We show tha…
Entanglement gauge and the non-Abelian geometric phase with two photonic qubits
Karl-Peter Marzlin, Stephen D. Bartlett, Barry C. Sanders
We introduce the entanglement gauge describing the combined effects of local operations and nonlocal unitary transformations on bipartite quantum systems. The entanglement gauge ex…
A New Laser Cooling Concept for Molecular Translational Motion
C. H. Raymond Ooi, Kar Peter Marzlin, Juergen Audretsch
We propose a laser cooling concept for the translational motion of molecules which does not require repeated spontaneous emission by each molecule. The cooling works by repetition…
Decoherence of Atomic Gases in Largely Detuned Laser Fields
Karl-Peter Marzlin
We study theoretically the decoherence of a gas of bosonic atoms induced by the interaction with a largely detuned laser beam. It is shown that for a standing laser beam decoherenc…
Local-field effect in atom optics of two-component Bose-Einstein condensates
K. V. Krutitsky, K. -P. Marzlin, J. Audretsch
Starting from the first principles of nonrelativistic QED we have developed the quantum theory of the interaction of a two-component ultracold atomic ensemble with the electromagne…
Collapse and revival of ultracold atoms in a microwave cavity and of photons in parametric down-conversion
Karl-Peter Marzlin, J"urgen Audretsch
We present a new theoretical method to study a trapped gas of bosonic two-level atoms interacting with a single mode of a microwave cavity. This interaction is described by a trili…
THE "FREELY" FALLING TWO-LEVEL ATOM IN A RUNNING LASER WAVE
Karl-Peter Marzlin, Juergen Audretsch
The time evolution of a two-level atom which is simultaneously exposed to the field of a running laser wave and a homogeneous gravitational field is studied. The result of the coup…