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Now showing items 41-50 of 181
Far-Field Optical Imaging and Manipulation of Individual Spins with Nanoscale Resolution
(Nature Publishing Group, 2010)
A fundamental limit to existing optical techniques for measurementand manipulation of spin degrees of freedom is set by diffraction, which does not allow spins separated by less than about a quarter of a micrometre to be ...
Quantum logic between remote quantum registers
(American Physical Society (APS), 2013)
We consider two approaches to dark-spin-mediated quantum computing in hybrid solid-state spin architectures. First, we review the notion of eigenmode-mediated unpolarized spin-chain state transfer and extend the analysis ...
Heisenberg-Limited Atom Clocks Based on Entangled Qubits
(American Physical Society (APS), 2014)
We present a quantum-enhanced atomic clock protocol based on groups of sequentially larger Greenberger-Horne-Zeilinger (GHZ) states that achieves the best clock stability allowed by quantum theory up to a logarithmic ...
Attractive photons in a quantum nonlinear medium
(Springer Nature, 2013)
The fundamental properties of light derive from its constituent particles—massless quanta (photons) that do not interact with one another\(^1\). However, it has long been known that the realization of coherent interactions ...
Photonic Quantum Transport in a Nonlinear Optical Fiber
(Institute of Physics, 2011)
We theoretically study the transmission of few-photon quantum fields through a strongly nonlinear optical medium. We develop a general approach to investigate nonequilibrium quantum transport of bosonic fields through a ...
Quantum Transport of Strongly Interacting Photons in a One-Dimensional Nonlinear Waveguide
(American Physical Review, 2012)
We present a theoretical technique for solving the quantum transport problem of a few photons through a one-dimensional, strongly nonlinear waveguide. We specifically consider the situation where the evolution of the optical ...
Enhanced Antiferromagnetic Exchange between Magnetic Impurities in a Superconducting Host
(American Physical Society (APS), 2014)
It is generally believed that superconductivity only weakly affects the indirect exchange between
magnetic impurities. If the distance r between impurities is smaller than than the superconducting
coherence length \((r ...
Hybrid Quantum Devices and Quantum Engineering
(IOP Science, 2009)
We discuss prospects of building hybrid quantum devices involving elements of atomic and
molecular physics, quantum optics and solid-state elements with the attempt to combine
advantages of the respective systems in ...
Quantum Repeater with Encoding
(American Physical Society, 2009)
We propose an approach to implement quantum repeaters for long-distance quantum communication. Our protocol generates a backbone of encoded Bell pairs and uses the procedure of classical error correction during simultaneous ...
Modulation Spectroscopy and Dynamics of Double Occupancies in a Fermionic Mott Insulator
(American Physical Society, 2009)
We calculate the rate of creation of double occupancies in a 3D Fermionic Mott insulator near half-filling by modulation of optical lattice potential. At high temperatures, incoherent holes lead to a broad response peaked ...