Projective measurements and generation of entangled Dirac particles in Schwarzschild spacetime |
| |
Authors: | Jieci Wang |
| |
Affiliation: | Institute of Physics and Department of Physics, Hunan Normal University, Changsha, Hunan 410081, PR China Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, Hunan Normal University, Changsha, Hunan 410081, PR China |
| |
Abstract: | It is shown that the projective measurements made by Bob who locates near the event horizon of the Schwarzschild black hole will create entangled particles detected by Alice who stays stationary at the asymptotically flat region. It is found that the degree of entanglement decreases as the frequency of the detected particles increases and approaches to zero as the frequency ωk → ∞. It is also noted that the degree of entanglement increases as the Hawking temperature increases. Especially, the particle state is unentangled when the Hawking temperature is zero and approaches a maximally entangled Bell state when the black hole evaporates completely. |
| |
Keywords: | Projective measurements Hawking temperature Schwarzschild spacetime |
本文献已被 ScienceDirect 等数据库收录! |
|