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Separable states improve protocols with finite randomness

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Separable states improve protocols with finite randomness
นักวิจัย : Bobby, Tan Kok Chuan , Paterek, Tomasz
คำค้น : DRNTU::Science::Physics::Atomic physics::Quantum theory
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2557
อ้างอิง : Bobby, T. K. C., & Paterek, T. (2014). Separable states improve protocols with finite randomness. New journal of physics, 16(9), 093063-. , 1367-2630 , http://hdl.handle.net/10220/24092 , http://dx.doi.org/10.1088/1367-2630/16/9/093063
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : New journal of physics
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

It is known from Bellʼs theorem that quantum predictions for some entangled states cannot be mimicked using local hidden variable (LHV) models. From a computer science perspective, LHV models may be interpreted as classical computers operating on a potentially infinite number of correlated bits originating from a common source. As such, Bell inequality violations achieved through entangled states are able to characterize the quantum advantage of certain tasks, so long as the task itself imposes no restriction on the availability of correlated bits. However, if the number of shared bits is limited, additional constraints are placed on the possible LHV models, and separable, i.e. disentangled states may become a useful resource. Bell violations are therefore no longer necessary to achieve a quantum advantage. Here we show that, in particular, separable states improve the so-called random access codes, which is a class of communication problem wherein one party tries to read a portion of the data held by another distant party in the presence of finite shared randomness and limited classical communication. We also show how the bias of classical bits can be used to avoid wrong answers in order to achieve the optimal classical protocol and how the advantage of quantum protocols is linked to quantum discord.

บรรณานุกรม :
Bobby, Tan Kok Chuan , Paterek, Tomasz . (2557). Separable states improve protocols with finite randomness.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Bobby, Tan Kok Chuan , Paterek, Tomasz . 2557. "Separable states improve protocols with finite randomness".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Bobby, Tan Kok Chuan , Paterek, Tomasz . "Separable states improve protocols with finite randomness."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2557. Print.
Bobby, Tan Kok Chuan , Paterek, Tomasz . Separable states improve protocols with finite randomness. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2557.