State independent contextuality advances one-way communication
نویسندگان
چکیده
منابع مشابه
State-independent quantum contextuality with single photons.
We present an experimental state-independent violation of an inequality for noncontextual theories on single particles. We show that 20 different single-photon states violate an inequality which involves correlations between results of sequential compatible measurements by at least 419 standard deviations. Our results show that, for any physical system, even for a single system, and independent...
متن کاملOptimal inequalities for state-independent contextuality.
Contextuality is a natural generalization of nonlocality which does not need composite systems or spacelike separation and offers a wider spectrum of interesting phenomena. Most notably, in quantum mechanics there exist scenarios where the contextual behavior is independent of the quantum state. We show that the quest for an optimal inequality separating quantum from classical noncontextual cor...
متن کاملExperimentally testable state-independent quantum contextuality.
We show that there are Bell-type inequalities for noncontextual theories that are violated by any quantum state. One of these inequalities between the correlations of compatible measurements is particularly suitable for testing this state-independent violation in an experiment.
متن کاملSecure one-way interactive communication
Alice and Bob are connected via a two-way binary channel. This paper describes an algorithm to enable Alice to send a message to Bob when 1) an oblivious adversary flips an unknown number of bits, T , on the channel; and 2) the message length L, and a desired error probability, ǫ are public knowledge. With probability at least 1− ǫ, our algorithm ensures that Bob receives the correct message, a...
متن کاملNecessary and Sufficient Condition for Quantum State-Independent Contextuality.
We solve the problem of whether a set of quantum tests reveals state-independent contextuality and use this result to identify the simplest set of the minimal dimension. We also show that identifying state-independent contextuality graphs [R. Ramanathan and P. Horodecki, Phys. Rev. Lett. 112, 040404 (2014)] is not sufficient for revealing state-independent contextuality.
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: 2019
ISSN: 1367-2630
DOI: 10.1088/1367-2630/ab4149