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Second Quantum Revolution a Reality with Chip-Based Atomic Physics
Second Quantum Revolution Chip-Based Atomic Physics
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2016/4/13
A University of Oklahoma-led team of physicists believes chip-based atomic physics holds promise to make the second quantum revolution—the engineering of quantum matter with arbitrary precision—a real...
Moving electrons around loops with light:A quantum device based on geometry
Moving electrons loops with light quantum device geometry
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2016/3/2
While a classical bit found in conventional electronics exists only in binary one or zero states, the more resourceful quantum bit, or ‘qubit,’ is represented by a vector, pointing to a simultaneous c...
Topological Rényi Entropy after a Quantum Quench
Topological Rényi Entropy Quantum Quench
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2016/1/23
We present an analytical study on the resilience of topological order after a quantum quench. The system is initially prepared in the ground state of the toric-code model, and then quenched by switchi...
Reply to Comment “State-independent experimental test of quantum contextuality in an indivisible system
Comment “State-independent experimental quantum contextuality indivisible system
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2016/1/23
Reply to Comment “State-independent experimental test of quantum contextuality in an indivisible system.
Quantum Logic between Remote Quantum Registers
Quantum Logic between Remote Quantum Registers
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2016/1/23
Weconsidertwoapproachestodark-spin-mediatedquantumcomputinginhybridsolid-statespinarchitectures.First,wereviewthenotionofeigenmode-mediatedunpolarizedspin-chainstatetransferandextendtheanalysisto vari...
Large quantum superpositions of a levitated nanodiamond through spin-optomechanical coupling
Large quantum superpositions levitated nanodiamond spin-optomechanical coupling
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2016/1/23
We propose a method to generate and detect large quantum superposition states and arbitrary Fock states for the oscillational mode of an optically levitated nanocrystal diamond. The nonlinear interact...
Decoy-state quantum key distribution with biased basis choice
Decoy-state quantum distribution biased basis choice
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2016/1/23
Quantum key distribution (QKD) utilizes the laws of quantum mechanics to achieve information-theoretically secure key generation. This field is now approaching the stage of commercialization, but many...
Source attack of decoy-state quantum key distribution using phase information
Source attack decoy-state quantum key distribution phase information
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2016/1/23
Quantum key distribution (QKD) utilizes the laws of quantum mechanics to achieve information-theoretically secure key generation. This field is now approaching the stage of commercialization, but many...
Postprocessing for quantum random-number generators: Entropy evaluation and randomness extraction
Postprocessing quantum random-number generator Entropy evaluation randomness extraction
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2016/1/23
Quantum random-number generators (QRNGs) can offer a means to generate information-theoretically provable random numbers, in principle. In practice, unfortunately, the quantum randomness is inevitably...
Experimental measurement-device-independent quantum key distribution
measurement-device-independent quantum key distribution
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2016/1/23
Quantum key distribution is proven to offer unconditional security in communication between two remote users with ideal source and detection. Unfortunately, ideal devices never exist in practice and d...
Experimental distillation of quantum nonlocality
Experimental distillation uantum nonlocality
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2016/1/23
We report the first experimental demonstration of distillation of quantum nonlocality, confirming the recent theoretical protocol [Phys. Rev. Lett. 102, 120401 (2009)]. Quantum nonlocality is describe...
Quantum computations without definite causal structure
Quantum computations definite causal structure
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2016/1/23
Weshowthatquantumtheoryallows fortransformationsofblackboxesthatcannotberealizedbyinsertingthe input black boxes within a circuit in a predefined causal order. The simplest example of such a transform...
Optimal design and quantum benchmarks for coherent state amplifiers
Optimal design quantum benchmarks coherent state amplifiers
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2016/1/23
We establish the ultimate quantum limits to the amplification of an unknown coherent state, both in the deterministic and probabilistic case, investigating the realistic scenario where the expected ph...
Quantum limited measurement of magnetic field gradient with entangled atoms
Quantum limited measurement magnetic field gradient entangled atoms
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2016/1/23
We propose a method to detect the amplitude gradient of a microwave field by using a pair of entangled two-component Bose-Einstein condensates. We consider the two spatially separated condensates to b...
No process in nature can perfectly clone an arbitrary quantum state. But is it possible to engineer processes that replicate quantum information with vanishingly small error? Here we demonstrate the p...