scholarly journals Two atoms in dissipative cavities in dispersive limit: entanglement sudden death and long-lived entanglement

2009 ◽  
Vol 43 (2) ◽  
pp. 025501 ◽  
Author(s):  
Jian-Song Zhang ◽  
Ai-Xi Chen ◽  
M Abdel-Aty
Keyword(s):  
Sudden Death ◽  
Entanglement Sudden Death ◽  
Dispersive Limit

scholarly journals Manipulation of entanglement sudden death in an all-optical setup

2017 ◽  
Vol 34 (3) ◽  
pp. 681 ◽  
Author(s):  
Ashutosh Singh ◽  
Siva Pradyumna ◽  
A. R. P. Rau ◽  
Urbasi Sinha
Keyword(s):  
Sudden Death ◽  
Entanglement Sudden Death ◽  
Optical Setup ◽  
All Optical

Coherent state quantum key distribution based on entanglement sudden death

2015 ◽  
Vol 15 (3) ◽  
pp. 1117-1133
Author(s):  
Gregg Jaeger ◽  
David Simon ◽  
Alexander V. Sergienko
Keyword(s):  
Sudden Death ◽  
Coherent State ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Entanglement Sudden Death

Entanglement sudden death via two-photon processes in cavity QED

2009 ◽  
Vol 42 (19) ◽  
pp. 195507 ◽  
Author(s):  
W B Cardoso ◽  
A T Avelar ◽  
B Baseia ◽  
N G de Almeida
Keyword(s):  
Sudden Death ◽  
Cavity Qed ◽  
Entanglement Sudden Death ◽  
Two Photon

scholarly journals Entanglement-breaking channels and entanglement sudden death

2016 ◽  
Vol 94 (1) ◽  
Author(s):  
Laura T. Knoll ◽  
Christian T. Schmiegelow ◽  
Osvaldo Jiménez Farías ◽  
Stephen P. Walborn ◽  
Miguel A. Larotonda
Keyword(s):  
Sudden Death ◽  
Entanglement Sudden Death

scholarly journals DECAY OF COHERENCE AND ENTANGLEMENT OF A SUPERPOSITION STATE FOR A CONTINUOUS VARIABLE SYSTEM IN AN ARBITRARY HEAT BATH

2010 ◽  
Vol 08 (05) ◽  
pp. 755-763
Author(s):  
G. W. FORD ◽  
R. F. O'CONNELL
Keyword(s):  
Sudden Death ◽  
Heat Bath ◽  
Continuous Variable ◽  
Time Development ◽  
Gaussian State ◽  
Entanglement Sudden Death ◽  
Equation Approach ◽  
Superposition State ◽  
Master Equation Approach ◽  
Non Gaussian

We consider the case of a pair of particles initially in a superposition state corresponding to a separated pair of wave packets. In contrast to a previous related work, we avoid a master equation approach and we calculate exactly the time development of this non-Gaussian state due to interaction with an arbitrary heat bath. We find that coherence decays continuously, as expected. We then investigate entanglement and find that at a finite time the system becomes separable (not entangled). Thus, we see that entanglement sudden death is also prevalent in continuous variable systems which should raise concern for the designers of entangled systems.

Tripartite entanglement sudden death in Yang-Baxter systems

2011 ◽  
Vol 10 (5) ◽  
pp. 705-715 ◽  
Author(s):  
Taotao Hu ◽  
Hang Ren ◽  
Kang Xue
Keyword(s):  
Sudden Death ◽  
Entanglement Sudden Death ◽  
Tripartite Entanglement

ENTANGLEMENT DYNAMICS OF TWO QUBITS COUPLED TO SQUEEZED DISSIPATIVE ENVIRONMENTS

2010 ◽  
Vol 24 (26) ◽  
pp. 2635-2645
Author(s):  
CHUAN-JIA SHAN ◽  
TAO CHEN ◽  
JI-BING LIU ◽  
WEI-WEN CHENG ◽  
TANG-KUN LIU ◽  
...  
Keyword(s):  
Steady State ◽  
Sudden Death ◽  
Entangled States ◽  
Entanglement Sudden Death ◽  
Entanglement Dynamics ◽  
Initial Product ◽  
System Parameters ◽  
Initial States ◽  
Dissipative Environments ◽  
Degree Of Entanglement

By analytically solving the Lindblad form of the master equation, we investigate entanglement dynamics of two qubits coupled via the XY interaction, where each qubit is interacting with an independent reservoir with the squeezing parameters and squeezing angles. In the weak-squeezed reservoir, we show that the entanglement sudden death and entanglement sudden birth will happen for various entangled states. Some initial product states evolve into entangled ones, initially entangled states lose completely or partially their entanglement. The effects of varying the degree of entanglement of the initial states, the spin chain system parameters and different values of the degree of squeezing on the sudden death, revival and birth times are analyzed in detail. We also see that the steady state concurrence appears in the squeezed dissipative environments, which is affected by both the system parameters and the degree of squeezing.

scholarly journals Controlling entanglement sudden death and birth in cavity QED

2009 ◽  
Vol 282 (17) ◽  
pp. 3652-3655 ◽  
Author(s):  
Jian-Song Zhang ◽  
Jing-Bo Xu
Keyword(s):  
Sudden Death ◽  
Cavity Qed ◽  
Entanglement Sudden Death
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