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Showing 2015 · quant-phShow all

21 papers · 2 filters

quant-ph2015

Complete nondestructive analysis of two-photon six-qubit hyperentangled Bell states assisted by cross-Kerr nonlinearity

Qian Liu, Guan-Yu Wang, Qing Ai +2

Hyperentanglement, the entanglement in several degrees of freedom (DOFs) of a quantum system, has attracted much attention as it can be used to increase both the channel capacity o…

quant-ph2015★ 12 cited

Universal distributed quantum computing on superconducting qutrits with dark photons

Ming Hua, Ming-Jie Tao, Ahmed Alsaedi +2

We present a one-step scheme to construct the controlled-phase gate deterministically on remote transmon qutrits coupled to different resonators connected by a superconducting tran…

quant-ph2015★ 62 cited

Error-rejecting quantum computing with solid-state spins assisted by low-Q optical microcavities

Tao Li, Fu-Guo Deng

We present an efficient proposal for error-rejecting quantum computing with quantum dots (QD) embedded in single-sided optical microcavities based on the interface between the circ…

quant-ph2015★ 30 cited

Heralded high-efficiency quantum repeater with atomic ensembles assisted by faithful single-photon transmission

Tao Li, Fu-Guo Deng

Quantum repeater is one of the important building blocks for long distance quantum communication network. The previous quantum repeaters based on atomic ensembles and linear optica…

quant-ph2015

Universal quantum gates for photon-atom hybrid systems assisted by bad cavities

Guan-Yu Wang, Qian Liu, Hai-Rui Wei +3

We present two deterministic schemes for constructing a CNOT gate and a Toffoli gate on photon-atom and photon-atom-atom hybrid quantum systems assisted by bad cavities, respective…

quant-ph2015★ 133 cited

Shortcuts to adiabatic holonomic quantum computation in decoherence-free subspace with transitionless quantum driving algorithm

Xue-Ke Song, Hao Zhang, Qing Ai +2

By using transitionless quantum driving algorithm (TQDA), we present an efficient scheme for the shortcuts to the holonomic quantum computation (HQC). It works in decoherence-free…

quant-ph2015★ 35 cited

Effects of electric field polarizations on pair production

Z. L. Li, D. Lu, B. S. Xie

The effects of electric field polarizations on pair production from a vacuum are investigated numerically by employing the real-time Dirac-Heisenberg-Wigner formalism. For few-cycl…

quant-ph2015★ 16 cited

Quantum Zeno and Zeno-like effects in nitrogen vacancy centers

Jing Qiu, Yang-Yang Wang, Zhang-Qi Yin +3

We present a proposal to realize the quantum Zeno effect (QZE) and quantum Zeno-like effect (QZLE) in a proximal nuclear spin by controlling a proximal electron s…

quant-ph2015★ 3 cited

One-step implementation of entanglement generation on microwave photons in distant 1D superconducting resonators

Ming Hua, Ming-Jie Tao, Fu-Guo Deng

We present a scalable quantum-bus-based device for generating the entanglement on microwave photons (MPs) in distant superconducting resonators (SRs). Different from the processors…

quant-ph2015★ 75 cited

Generation and complete nondestructive analysis of hyperentanglement assisted by nitrogen-vacancy centers in resonators

Qian Liu, Mei Zhang

We present two efficient schemes for the deterministic generation and the complete nondestructive analysis of hyperentangled Bell states in both the polarization and spatial-mode d…

quant-ph2015★ 11 cited

Exact quantum Bayesian rule for qubit measurements in circuit QED

Wei Feng, Pengfei Liang, Lupei Qin +1

Developing efficient framework for quantum measurements is of essential importance to quantum science and technology. In this work, for the important superconducting circuit-QED se…

quant-ph2015★ 11 cited

Efficient generation of NOON states on two microwave-photon resonators

Ming Hua, Ming-Jie Tao, Fu-Guo Deng

We present an efficient scheme for the generation of NOON states of photons in circuit QED assisted by a superconducting charge qutrit. It is completed with two kinds of manipulati…

quant-ph2015

Quantum state transfer and controlled-phase gate on one-dimensional superconducting resonators assisted by a quantum bus

Ming Hua, Ming-Jie Tao, Fu-Guo Deng

We propose a quantum processor for the scalable quantum computation on microwave photons in distant one-dimensional superconducting resonators. It is composed of a common resonator…

quant-ph2015★ 25 cited

Simple understanding of quantum weak values

Lupei Qin, Wei Feng, Xin-Qi Li

In this work we revisit the important and controversial concept of quantum weak values, aiming to provide a simplified understanding to its associated physics and the origin of ano…

quant-ph2015★ 19 cited

Nonperturbative signatures in pair production for general elliptic polarization fields

Z. L. Li, D. Lu, B. S. Xie +3

The momentum signatures in nonperturbative multiphoton pair production for general elliptic polarization electric fields are investigated by employing the real-time Dirac-Heisenber…

quant-ph2015★ 46 cited

Quantum information processing on nitrogen-vacancy ensembles with the local resonance assisted by circuit QED

Ming-Jie Tao, Ming Hua, Qing Ai +1

With the local resonant interaction between a nitrogen-vacancy-center ensemble (NVE) and a superconducting coplanar resonator, and the single-qubit operation, we propose two protoc…

quant-ph2015★ 29 cited

Effective Long-distance Interaction from Short-distance Interaction in Periodically Driven One-dimensional Classical System

Lingzhen Guo, Modan Liu, Michael Marthaler

We study the classical dynamics of many interacting particles in a periodically driven one-dimensional (1D) system. We show that under the rotating wave approximation (RWA), a shor…

quant-ph2015★ 5 cited

Systematic entanglement concentration for unknown less-entangled three-photon W states

Fang-Fang Du, Fu-Guo Deng

We present a systematic entanglement concentration protocol (ECP) for an arbitrary unknown less-entangled three-photon W state, resorting to the optical property of the quantum-dot…

quant-ph2015★ 2 cited

Transport of quantum excitations via local and nonlocal fluctuations

M. Zhang, Tony E. Lee, H. R. Sadeghpour

In quantum systems, one usually seeks to minimize dephasing noise and disorder. The efficiency of transport in a quantum system is usually degraded by the presence of noise and dis…

quant-ph2015

Weak values in continuous weak measurement of qubits

Lupei Qin, Pengfei Liang, Xin-Qi Li

For continuous weak measurement of qubits, we obtain exact expressions for weak values (WVs) from the post-selection restricted average of measurement outputs, by using both the qu…

quant-ph2015★ 16 cited

Negative Refraction Induced by Möbius Topology

Y. N. Fang, Yao Shen, Qing Ai +1

We theoretically show the negative refraction existing in Möbius molecules. The negative refractive index is induced by the non-trivial topology of the molecules. With the Möbius b…