Entangled states cannot be classically simulated in generalized Bell experiments with quantum inputs
نویسندگان
چکیده
منابع مشابه
Quantum states cannot be transmitted efficiently classically
We show that any classical communication protocol that can approximately simulate the result of applying an arbitrary measurement (held by one party) to a quantum state of n qubits (held by another) must transmit at least 2 bits, up to constant factors. The argument is based on a lower bound on the classical communication complexity of a distributed variant of the Fourier sampling problem. We o...
متن کاملEntangled inputs cannot make imperfect quantum channels perfect.
Entangled inputs can enhance the capacity of quantum channels, this being one of the consequences of the celebrated result showing the nonadditivity of several quantities relevant for quantum information science. In this work, we answer the converse question (whether entangled inputs can ever render noisy quantum channels to have maximum capacity) to the negative: No sophisticated entangled inp...
متن کاملGeneralized Bell States and Quantum Teleportation
We make a brief comment on measurement of quantum operators with degenerate eigenstates and apply to quantum teleportation. We also try extending the quantum teleportation by Bennett et al [5] to more general situation by making use of generalized Bell states. E-mail address : [email protected] Home-page : http://fujii.sci.yokohama-cu.ac.jp
متن کاملGeneralized Entropy with Clustering and Quantum Entangled States
We first show how a new definition of entropy, which is intuitively very simple, as a divergence in cluster-size space, leads to a generalized form that is nonextensive for correlated units, but coincides exactly with the conventional one for completely independent units. We comment on the relevance of such an approach for variable-size microsystems such as in a liquid. We then indicate how the...
متن کاملTwo-party quantum privacy comparison with polarization-entangled bell states and the coherent states
We propose a protocol of quantum privacy comparison with polarization-entangled Bell states and the coherent states. One of two legitimate participants, Alice, prepares polarization-entangled Bell states and keeps one photon of each photon pair and sends the other photons to the third party, Charlie. Receiving the photons, Charlie performs single-photon transformation operations on them and the...
متن کاملذخیره 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: 2013
ISSN: 1367-2630
DOI: 10.1088/1367-2630/15/5/053025