scholarly journals The Controlled Teleportation of an Arbitrary Two-Atom Entangled State in Driven Cavity QED

2008 ◽  
Vol 48 (5) ◽  
pp. 1516-1522 ◽  
Author(s):  
Chuan-Jia Shan ◽  
Ji-Bing Liu ◽  
Tang-Kun Liu ◽  
Yan-Xia Huang ◽  
Hong Li
Keyword(s):  
Cavity Qed ◽  
Controlled Teleportation ◽  
Entangled State ◽  
Driven Cavity

SECRET SHARING OF N-ATOM ENTANGLED STATE IN CAVITY QED

2007 ◽  
Vol 18 (03) ◽  
pp. 343-349 ◽  
Author(s):  
ZHONG-XIAO MAN ◽  
YUN-JIE XIA ◽  
ZHAN-JUN ZHANG
Keyword(s):  
Secret Sharing ◽  
Cavity Qed ◽  
Thermal Field ◽  
Bell State ◽  
Entangled State ◽  
Quantum Channels ◽  
Driven Cavity ◽  
Bell State Measurement ◽  
State Measurement ◽  
Cavity Decay

We propose a scheme to secret sharing of an unknown N-atom entangled state in driven cavity QED. The scheme needs only atomic Bell states as the quantum channels and joint Bell-state measurement is unnecessary. In addition, the scheme is insensitive to the cavity decay and the thermal field.

THE TELEPORTATION OF AN ARBITRARY TWO-ATOM ENTANGLED STATE IN DRIVEN CAVITY QED

2007 ◽  
Vol 05 (03) ◽  
pp. 359-366 ◽  
Author(s):  
CHUAN-JIA SHAN ◽  
ZHONG-XIAO MAN ◽  
YUN-JIE XIA ◽  
TANG-KUN LIU
Keyword(s):  
Cavity Qed ◽  
Thermal Field ◽  
Bell State ◽  
Ghz State ◽  
Entangled State ◽  
Driven Cavity ◽  
Bell State Measurement ◽  
State Measurement ◽  
Cavity Decay ◽  
Probability Of Success

We propose a scheme for the teleportation of an arbitrary two-atom entangled state |ϕ〉12 = a|gg〉12 + b|ge〉12 + c|eg〉12 + d|ee〉12 in driven QED. Two pairs of maximally two-atom entangled state are required as the quantum channel. This scheme does not involve apparent (or direct) Bell-state measurement and is insensitive to the cavity decay and the thermal field. Meanwhile this approach can be used to teleport the unknown multipartite GHZ state. The probability of success in our scheme can reach 1.0.

Scheme for implementing controlled teleportation and dense coding with genuine pentaqubit entangled state in cavity QED

2009 ◽  
Vol 282 (4) ◽  
pp. 670-673 ◽  
Author(s):  
Xue-Wen Wang ◽  
Zhao-Hui Peng ◽  
Chun-Xia Jia ◽  
Yan-Hui Wang ◽  
Xiao-Juan Liu
Keyword(s):  
Cavity Qed ◽  
Controlled Teleportation ◽  
Entangled State ◽  
Dense Coding

GENERATION OF GENUINE FIVE-QUBIT ENTANGLED STATES IN ION TRAP AND CAVITY QED

2011 ◽  
Vol 09 (05) ◽  
pp. 1299-1306 ◽  
Author(s):  
XIU LIN ◽  
WAN-JUN SU
Keyword(s):  
Cavity Qed ◽  
Ion Trap ◽  
Qubit State ◽  
Entangled States ◽  
Controlled Teleportation ◽  
Entangled State ◽  
Simple Scheme ◽  
New Approach ◽  
Two Systems ◽  
State Formula

Recently, a genuine five-qubit entangled state [Formula: see text] has been proposed by Man et al. In this paper, we present a simple scheme for generating such a state in ion trap and cavity QED, respectively. This study offers a new approach to faithful controlled teleportation of an arbitrary two-qubit state in these two systems.

Improvement on cyclic controlled teleportation by using a seven-qubit entangled state

2021 ◽  
Vol 53 (8) ◽  
Author(s):  
Vikram Verma ◽  
Dhiraj Yadav ◽  
Devendra Kumar Mishra
Keyword(s):  
Controlled Teleportation ◽  
Entangled State

Atomic Bell states generation in an open driven cavity QED system

2008 ◽  
Vol 160 (1) ◽  
pp. 61-70
Author(s):  
F. Casagrande ◽  
A. Lulli
Keyword(s):  
Cavity Qed ◽  
Bell States ◽  
Driven Cavity

scholarly journals Entanglement-enhanced matter-wave interferometry in a high-finesse cavity

2021 ◽  
Author(s):  
James Thompson ◽  
Graham Greve ◽  
Chengyi Luo ◽  
Baochen Wu
Keyword(s):  
Cavity Qed ◽  
Degrees Of Freedom ◽  
Inertial Sensors ◽  
Mean Field ◽  
New Physics ◽  
Matter Wave ◽  
Quantum Limit ◽  
Entangled State ◽  
Standard Quantum ◽  
Standard Quantum Limit

Abstract Entanglement is a fundamental resource that allows quantum sensors to surpass the standard quantum limit set by the quantum collapse of independent atoms. Collective cavity-QED systems have succeeded in generating large amounts of directly observed entanglement involving the internal degrees of freedom of laser-cooled atomic ensembles. Here we demonstrate cavity-QED entanglement of external degrees of freedom to realize a matter-wave interferometer of 700 atoms in which each individual atom falls freely under gravity and simultaneously traverses two paths through space while also entangled with the other atoms. We demonstrate both quantum non-demolition measurements and cavity-mediated spin interactions for generating squeezed momentum states with directly observed metrological gain 3.4^{+1.1}_{-0.9} dB and 2.5^{+0.6}_{-0.6} dB below the standard quantum limit respectively. An entangled state is for the first time successfully injected into a Mach-Zehnder light-pulse interferometer with 1.7^{+0.5}_{-0.5} dB of directly observed metrological enhancement. These results open a new path for combining particle delocalization and entanglement for inertial sensors, searches for new physics, particles, and fields, future advanced gravitational wave detectors, and accessing beyond mean-field quantum many-body physics.

Sign in / Sign up

Export Citation Format

Share Document