Quantum state merging with bound entanglement

نویسندگان

چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Construction of quantum states with bound entanglement

We present a new family of bound-entangled quantum states in 3× 3 dimensions. Their density matrix ρ depends on 7 independent parameters and has 4 different non-vanishing eigenvalues. PACS 03.67.Hk, 03.65.Bz, 89.70.+c

متن کامل

Interpreting quantum discord through quantum state merging

We present an operational interpretation of quantum discord based on the quantum state merging protocol. Quantum discord is the markup in the cost of quantum communication in the process of quantum state merging, if one discards relevant prior information. Our interpretation has an intuitive explanation based on the strong subadditivity of von Neumann entropy. We use our result to provide opera...

متن کامل

Preparing the bound instance of quantum entanglement

J. DiGuglielmo, A. Samblowski, B. Hage, C. Pineda, J. Eisert, and R. Schnabel 1 Institut für Gravitationsphysik, Leibniz Universität Hannover, 30167 Hannover, Germany and Max-Planck Institut für Gravitationsphysik, 30167 Hannover, Germany 2 Instituto de Fı́sica, Universidad Nacional Autónoma de México, México 3 Institute of Physics and Astronomy, University of Potsdam, 14476 Potsdam, Germany 4 I...

متن کامل

Quantum dense coding by spatial state entanglement

We have presented a theoretical extended version of dense coding protocol using entangled position state of two particles shared between two parties. A representation of Bell states and the required unitary operators are shown utilizing symmetric normalized Hadamard matrices. In addition, some explicit and conceivable forms for the unitary operators are presented by using some introduced basic ...

متن کامل

Mixed-state entanglement and quantum error correction.

Entanglement purification protocols (EPP) and quantum errorcorrecting codes (QECC) provide two ways of protecting quantum states from interaction with the environment. In an EPP, perfectly entangled pure states are extracted, with some yield D, from a bipartite mixed state M ; with a QECC, an arbitrary quantum state |ξ〉 can be transmitted at some rate Q through a noisy channel χ without degrada...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: New Journal of Physics

سال: 2020

ISSN: 1367-2630

DOI: 10.1088/1367-2630/ab70d7