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69 papers · 2 filters
Absence of logarithmic and algebraic scaling entanglement phases due to skin effect
Xu Feng, Shuo Liu, Shu Chen +1
Measurement-induced phase transition in the presence of competition between projective measurement and random unitary evolution has attracted increasing attention due to the rich p…
On the structure of mirrored operators obtained from optimal entanglement witnesses
Anindita Bera, Joonwoo Bae, Beatrix C. Hiesmayr +1
Entanglement witnesses (EWs) are a versatile tool in the verification of entangled states. The framework of mirrored EW doubles the power of a given EW by introducing its twin -- a…
All-Photonic Quantum Repeater for Multipartite Entanglement Generation
Chen-Long Li, Yao Fu, Wen-Bo Liu +5
Quantum network applications like distributed quantum computing and quantum secret sharing present a promising future network equipped with quantum resources. Entanglement generati…
Enhancing phase-covariant channel performance with non-unitality
Katarzyna Siudzińska, Michał Studziński
We analyze quantum communication properties of phase-covariant channels depending on their degree of non-unitality. In particular, we derive analytical formulas for minimal and max…
Observation of size-dependent boundary effects in non-Hermitian electric circuits
Luhong Su, Cui-Xian Guo, Yongliang Wang +5
The non-Hermitian systems with the non-Hermitian skin effect (NHSE) are very sensitive to the imposed boundary conditions and lattice size, which leads to size-dependent non-Hermit…
Breaking Rate-Distance Limitation of Measurement-Device-Independent Quantum Secret Sharing
Chen-Long Li, Yao Fu, Wen-Bo Liu +5
Currently most progresses on quantum secret sharing suffer from rate-distance bound, and thus the key rates are limited. In addition to the limited key rate, the technical difficul…