146 search results - page 4 / 30 » Private Quantum Channels |
TIT
2002
13 years 7 months ago
2002
We extend a low-rate improvement of the random coding bound on the reliability of a classical discrete memoryless channel (DMC) to its quantum counterpart. The key observation that...
TIT
2002
13 years 7 months ago
2002
The entanglement-assisted classical capacity of a noisy quantum channel ( ) is the amount of information per channel use that can be sent over the channel in the limit of many uses...
CORR
2011
Springer
12 years 11 months ago
2011
Springer
We consider the Gaussian multiple-input multiple-output (MIMO) broadcast channel with common and private messages. We obtain the degrees of freedom (DoF) region of this channel. W...
CORR
1999
Springer
13 years 7 months ago
1999
Springer
Quantum key distribution is the best known application of quantum cryptography. Previously proposed proofs of security of quantum key distribution contain various technical subtle...
ICALP
2005
Springer
14 years 1 months ago
2005
Springer
We prove new lower bounds for locally decodable codes and private information retrieval. We show that a 2-query LDC encoding nbit strings over an ℓ-bit alphabet, where the decode...