Multipartite quantum coherence and monogamy for Dirac fields subject to Hawking radiation

Quantum coherence and distribution of N-partite bosonic fields in noninertial frame

“…However, under the influence of Unruh effect, these two resources also have different behaviors. For example, the bosonic coherence of both the tripartite GHZ and W states reduces more slowly compared with the case of fermionic fields [33,36], with the increasing of the observer's accelerations. In contrast, the fermionic entanglement is more robust against the Unruh effect than the case of bosonic fields [15,21,25].…”

“…It was shown that the entanglement of fermionic fields degrades and approaches to a finite value under the infinite acceleration limit [20][21][22][23][24][25][26][27], but the entanglement of bosonic fields vanishes in the infinite acceleration limit [15][16][17][18]. The quantum coherence for multipartite Dirac fields was also studied and the phenomenon of freeze was found [33]. However, quantum coherence for multipartite bosonic fields is rarely studied, due to its relatively complicated calculations.…”

Quantum correlation between a qubit and a relativistic boson in an expanding spacetime

“…Though the study about quantum entanglement is originated initially from the nonrelativistic realm, extending it to the relativistic domain is ultimately necessary because the world can never escape the influence of gravity. In fact, many settings, such as photons in the realization of quantum information [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21], involve relativistic effects. Moreover, quantum entanglement plays a prominent role in the information loss problem and in black hole thermodynamics [22][23][24][25].…”

“…In fact, the notion of relativistic quantum information includes two branches: the special relativity effect [26] and the general relativity (acceleration and gravity) effect. In the latter case, people mainly concern two aspects: (i) study the influence of gravity or acceleration on quantum resources or quantum settings, such as quantum entanglement, quantum coherence, quantum key distribution and quantum communication [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]; (ii) probe the property of spacetime via quantum effect [27][28][29]. Quantum entanglement subject to gravitational effect shows that conceptually important qualitative differences from the nonrelativistic perspective arise.…”

Dynamical dephasing of bipartite and tripartite quantum coherence of spin-1/2 XXZ Heisenberg model in a renormalization group approach

“…However, despite the long history of quantum coherence, it is recently that it has been quantified in a formal sense using the tools of quantum information theory [8]. This has led to a lot of new developments from the quantum measurement [9][10][11][12], the distribution of quantum coherence in multipartite systems [13][14][15][16][17], and the application of coherence in the characterization of quantum states and many-body systems [18][19][20][21][22][23].…”