Moderate Deviation Analysis for Classical Communication over Quantum Channels
نویسندگان
چکیده
منابع مشابه
On converse bounds for classical communication over quantum channels
We explore several new converse bounds for classical communication over quantum channels in both the one-shot and asymptotic regime. First, we show that the MatthewsWehner meta-converse bound for entanglement-assisted classical communication can be achieved by activated, no-signalling assisted codes, suitably generalizing a result for classical channels. Second, we derive a new efficiently comp...
متن کاملDecoherence-Free Communication over Multiaccess Quantum Channels
In this paper we consider decoherence-free communication over multiple access and k-user quantum channels. First, we concentrate on a hermitian unitary noise model U for a two-access bi-unitary channel and show that in this case a decoherence-free code exists if the space of Schmidt matrices of an eigensubspace of U exhibits certain properties of decomposability. Then, we show that our techniqu...
متن کاملSecure Long-Distance Quantum Communication over Optical Fiber Quantum Channels
In today's communication networks, the widespread use of optical fiber and passive optical elements allows to use quantum key distribution (QKD) in the current standard optical network infrastructure. In the past few years, quantum key distribution schemes have attracted much study. The security of modern cryptographic methods, like asymmetric cryptography, relies heavily on the problem of fact...
متن کاملClassical feedback for quantum channels
In this paper we investigate whether the use of a noiseless, classical feedback channel will increase the capacity of a quantum discrete memoryless channel to transmit classical information. This problem has been previously analyzed by Bowen and Nagarajan [2] for the case of protocols restricted to product input states. They showed that feedback did not increase the information capacity. In thi...
متن کاملExperimental error filtration for quantum communication over highly noisy channels.
Error filtration is a method for encoding the quantum state of a single particle into a higher dimensional Hilbert space in such a way that it becomes less sensitive to noise. We have realized a fiber optics demonstration of this method and illustrated its potentialities by carrying out the optical part of a quantum key distribution scheme over a line whose phase noise is too high for a standar...
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: Communications in Mathematical Physics
سال: 2017
ISSN: 0010-3616,1432-0916
DOI: 10.1007/s00220-017-2971-1