Showing 2016 · quant-phShow all

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quant-ph2016★ 107 cited

Atomtronics-enabled Quantum Technologies

Luigi Amico, Gerhard Birkl, Malcolm Boshier +1

Atomtronics is an emerging field in quantum technology that promises to realize 'atomic circuit' architectures exploiting ultra-cold atoms manipulated in versatile micro-optical ci…

quant-ph2016★ 5 cited

Holographic quantum imaging: reconstructing spatial properties via two-particle interference

Nils Trautmann, Gergely Ferenczi, Sarah Croke +1

Two particle interference phenomena, such as the Hong-Ou-Mandel effect, are a direct manifestation of the nature of the symmetry properties of indistinguishable particles as descri…

quant-ph2016★ 103 cited

Quantum spin transistor with a Heisenberg spin chain

O. V. Marchukov, A. G. Volosniev, M. Valiente +2

We propose and analyze a scheme for conditional state transfer in a Heisenberg spin chain which realizes a quantum spin transistor. In our scheme, the absence or presence of…

quant-ph2016★ 38 cited

Will a decaying atom feel a friction force?

Matthias Sonnleitner, Nils Trautmann, Stephen M. Barnett

We show how a simple calculation leads to the surprising result that an excited two-level atom moving through vacuum sees a tiny friction force of first order in v/c. At first sigh…

quant-ph2016★ 19 cited

Measurement-induced chaos and quantum state discrimination in an iterated Tavis-Cummings scheme

Juan Mauricio Torres, József Zsolt Bernád, Gernot Alber +2

A cavity quantum electrodynamical scenario is proposed for implementing a Schrödinger microscope capable of amplifying differences between non orthogonal atomic quantum states. The…

quant-ph2016★ 131 cited

Arbitrarily Accurate Pulse Sequences for Robust Dynamical Decoupling

Genko T. Genov, Daniel Schraft, Nikolay V. Vitanov +1

We introduce universally robust sequences for dynamical decoupling, which simultaneously compensate pulse imperfections and the detrimental effect of a dephasing environment to an…

quant-ph2016★ 4 cited

Connecting the quantum and classical worlds

Barbara Drossel

By considering (non-relativistic) quantum mechanics as it is done in practice in particular in condensed-matter physics, it is argued that a deterministic, unitary time evolution w…

quant-ph2016★ 13 cited

Conditions for entanglement purification with general two-qubit states

Juan Mauricio Torres, József Zsolt Bernád

We present the convergence study of a recurrence entanglement purification protocol using arbitrary two-qubit initial states. The protocol is based on a rank two projector in the B…

quant-ph2016★ 9 cited

Efficient single photon absorption by a trapped moving atom

Nils Trautmann, Gernot Alber, Gerd Leuchs

The influence of the center of mass motion of a trapped two level system on efficient resonant single photon absorption is investigated. It is shown that this absorption process de…

quant-ph2016★ 19 cited

Dissipation, dephasing and quantum Darwinism in qubit systems with random unitary interactions

Nenad Balaneskovic, Marc Mendler

We investigate the influence of dissipation and decoherence on quantum Darwinism by generalizing Zurek's original qubit model of decoherence and the establishment of pointer states…

quant-ph2016★ 3 cited

Dynamical control of quantum systems in the context of mean ergodic theorems

J. Z. Bernád

Equidistant and non-equidistant single pulse "bang-bang" dynamical controls are investigated in the context of mean ergodic theorems. We show the requirements in which the limit of…

quant-ph2016★ 42 cited

Stationary light pulses and narrowband light storage in a laser-cooled ensemble loaded into a hollow-core fiber

Frank Blatt, Lachezar S. Simeonov, Thomas Halfmann +1

We report on the first observation of stationary light pulses and narrowband light storage inside a hollow-core photonic crystal fiber. Laser-cooled atoms were first loaded into th…

quant-ph2016★ 31 cited

Computational Security of Quantum Encryption

Gorjan Alagic, Anne Broadbent, Bill Fefferman +3

Quantum-mechanical devices have the potential to transform cryptography. Most research in this area has focused either on the information-theoretic advantages of quantum protocols…

quant-ph2016

Universality in random quantum networks

Jaroslav Novotný, Gernot Alber, Igor Jex

Networks constitute efficient tools for assessing universal features of complex systems. In physical contexts, classical as well as quantum, networks are used to describe a wide ra…

quant-ph2016★ 1 cited

Cooperative quantum electrodynamical processes in an ellipsoidal cavity

Gernot Alber, Nils Trautmann

We investigate spontaneous photon emission and absorption processes of two two-level atoms trapped close to the focal points of an ellipsoidal cavity, thereby taking into account t…

quant-ph2016★ 5 cited

Protecting coherence by environmental decoherence: A solvable paradigmatic model

Juan Mauricio Torres, Thomas H. Seligman

We consider a particularly simple exactly solvable model for a qubit coupled to sequentially nested environments. The purpose is to exemplify the coherence conserving effect of a c…