Showing 2012 · quant-phShow all

42 papers · 2 filters

quant-ph2012★ 212 cited

Two-photon and three-photon blockades in driven nonlinear systems

Adam Miranowicz, Malgorzata Paprzycka, Yu-xi Liu +2

Photon blockade, in analogy to Coulomb's or phonon blockades, is a phenomenon when a single photon in a nonlinear cavity blocks the transmission of a second photon. This effect can…

quant-ph2012★ 108 cited

Photon-induced tunneling in optomechanical systems

Xun-Wei Xu, Yuan-Jie Li, Yu-xi Liu

In contrast to recent studies [Rabl, Phys. Rev. Lett. 107, 063601 (2011); Nunnenkamp et al., Phys. Rev. Lett. 107, 063602 (2011)] on photon blockade that prevents subsequent photon…

quant-ph2012★ 1 cited

Semi-loss-tolerant strong quantum coin-flipping protocol using quantum non-demolition measurement

Qian Yang, Jia-Jun Ma, Fen-Zhuo Guo +1

In this paper, we present a semi-loss-tolerant strong quantum coin-flipping (QCF) protocol with the best bias of 0.3536. Our manuscript applies Quantum non-demolition (QND) measure…

quant-ph2012★ 22 cited

Spectral Analysis and Identification of Noises in Quantum Systems

Re-Bing Wu, Tie-Fu Li, A. G. Kofman +5

In quantum information processing, knowledge of the noise in the system is crucial for high-precision manipulation and tomography of coherent quantum operations. Existing strategie…

quant-ph2012★ 193 cited

Statistical fluctuation analysis for measurement-device-independent quantum key distribution

Xiongfeng Ma, Chi-Hang Fred Fung, Mohsen Razavi

Measurement-device-independent quantum key distribution with a finite number of decoy states is analyzed under finite-data-size assumption. By accounting for statistical fluctuatio…

quant-ph2012★ 26 cited

Local response of topological order to an external perturbation

Alioscia Hamma, Lukasz Cincio, Siddhartha Santra +2

We study the behavior of the Rényi entropies for the toric code subject to a variety of different perturbations, by means of 2D density matrix renormalization group and analytical…

quant-ph2012★ 95 cited

A hybrid quantum circuit consisting of a superconducting flux qubit coupled to both a spin ensemble and a transmission-line resonator

Ze-Liang Xiang, Xin-You Lu, Tie-Fu Li +2

We propose an experimentally realizable hybrid quantum circuit for achieving a strong coupling between a spin ensemble and a transmission-line resonator via a superconducting flux…

quant-ph2012★ 43 cited

Experimental simulation of anyonic fractional statistics with an NMR quantum information processor

Guanru Feng, Guilu Long, Raymond Laflamme

Anyons have exotic statistical properties, fractional statistics, differing from Bosons and Fermions. They can be created as excitations of some Hamiltonian models. Here we present…

quant-ph2012★ 50 cited

Quantum Theory, namely the pure and reversible theory of information

G. Chiribella, G. M. D'Ariano, P. Perinotti

After more than a century since its birth, Quantum Theory still eludes our understanding. If asked to describe it, we have to resort to abstract and ad hoc principles about complex…

quant-ph2012★ 90 cited

Ergodic and Mixing Quantum Channels in Finite Dimensions

Daniel Burgarth, Giulio Chiribella, Vittorio Giovannetti +2

The paper provides a systematic characterization of quantum ergodic and mixing channels in finite dimensions and a discussion of their structural properties. In particular, we disc…

quant-ph2012★ 54 cited

Engineering of nonclassical motional states in optomechanical systems

Xun-Wei Xu, Hui Wang, Jing Zhang +1

We propose to synthesize arbitrary nonclassical motional states in optomechanical systems by using sideband excitations and photon blockade. We first demonstrate that the Hamiltoni…

quant-ph2012★ 443 cited

Experimental measurement-device-independent quantum key distribution

Yang Liu, Teng-Yun Chen, Liu-Jun Wang +12

Throughout history, every advance in encryption has been defeated by advances in hacking with severe consequences. Quantum cryptography holds the promise to end this battle by offe…

quant-ph2012★ 89 cited

State-independent experimental tests of quantum contextuality in a three dimensional system

Xiang Zhang, Mark Um, Junhua Zhang +6

We experimentally observed state-independent violations of Kochen-Specker inequalities for the simplest indivisible quantum system manifesting quantum contextuality, a three-level…

quant-ph2012★ 72 cited

Distinguishability of Quantum States by Positive Operator-Valued Measures with Positive Partial Transpose

Nengkun Yu, Runyao Duan, Mingsheng Ying

We study the distinguishability of bipartite quantum states by Positive Operator-Valued Measures with positive partial transpose (PPT POVMs). The contributions of this paper includ…

quant-ph2012★ 13 cited

Classification of arbitrary-dimensional multipartite pure states under stochastic local operations and classical communication using the rank of coefficient matrix

Shuhao Wang, Yao Lu, Ming Gao +2

We study multipartite entanglement under stochastic local operations and classical communication (SLOCC) and propose the entanglement classification under SLOCC for arbitrary-dimen…

quant-ph2012★ 62 cited

Non-Markovian quantum input-output networks

Jing Zhang, Yu-xi Liu, Re-Bing Wu +2

Quantum input-output response analysis is a useful method for modeling the dynamics of complex quantum networks, such as those for communication or quantum control via cascade conn…

quant-ph2012★ 70 cited

Demon-like Algorithmic Quantum Cooling and its Realization with Quantum Optics

Jin-Shi Xu, Man-Hong Yung, Xiao-Ye Xu +5

The simulation of low-temperature properties of many-body systems remains one of the major challenges in theoretical and experimental quantum information science. We present, and d…

quant-ph2012★ 13 cited

Multi-partite type state is determined by its single particle reduced density matrices

Nengkun Yu

In this short note, we show that multi-partite -type state is up to local unitaries uniquely determined by its reduced density matrices.

quant-ph2012★ 177 cited

The completeness of quantum theory for predicting measurement outcomes

Roger Colbeck, Renato Renner

The predictions that quantum theory makes about the outcomes of measurements are generally probabilistic. This has raised the question whether quantum theory can be considered comp…

quant-ph2012★ 703 cited

Large Scale Modular Quantum Computer Architecture with Atomic Memory and Photonic Interconnects

C. Monroe, R. Raussendorf, A. Ruthven +4

The practical construction of scalable quantum computer hardware capable of executing non-trivial quantum algorithms will require the juxtaposition of different types of quantum sy…

quant-ph2012★ 30 cited

Optimal networks for Quantum Metrology: semidefinite programs and product rules

G. Chiribella

We investigate the optimal estimation of a quantum process that can possibly consist of multiple time steps. The estimation is implemented by a quantum network that interacts with…

quant-ph2012★ 244 cited

Postprocessing for quantum random number generators: entropy evaluation and randomness extraction

Xiongfeng Ma, Feihu Xu, He Xu +3

Quantum random-number generators (QRNGs) can offer a means to generate information-theoretically provable random numbers, in principle. In practice, unfortunately, the quantum rand…

quant-ph2012★ 216 cited

Three-intensity decoy state method for device independent quantum key distribution with basis dependent errors

Xiang-Bin Wang

We study the measurement device independent quantum key distribution (MDIQKD) in practice with limited resource, when there are only 3 different states in implementing the decoy-st…

quant-ph2012★ 71 cited

State-independent experimental test of quantum contextuality in an indivisible system

C. Zu, Y. -X. Wang, D. -L. Deng +5

We report the first state-independent experimental test of quantum contextuality on a single photonic qutrit (three-dimensional system), based on a recent theoretical proposal [Yu…