Unconditionally secure device-independent quantum key distribution with only two devices

نویسندگان

  • Jonathan Barrett
  • Roger Colbeck
  • Adrian Kent
چکیده

Jonathan Barrett, ∗ Roger Colbeck, † and Adrian Kent 4, ‡ Royal Holloway, University of London, Egham Hill, Egham TW20 0EX, U.K. Institute for Theoretical Physics, ETH Zurich, 8093 Zurich, Switzerland. Centre for Quantum Information and Foundations, DAMTP, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge, CB3 0WA, U.K. Perimeter Institute for Theoretical Physics, 31 Caroline Street North, Waterloo, ON N2L 2Y5, Canada. (Dated: 11 October 2012)

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

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Experimental measurement-device-independent quantum key distribution.

Quantum key distribution is proven to offer unconditional security in communication between two remote users with ideal source and detection. Unfortunately, ideal devices never exist in practice and device imperfections have become the targets of various attacks. By developing up-conversion single-photon detectors with high efficiency and low noise, we faithfully demonstrate the measurement-dev...

متن کامل

Experimental measurement-device-independent verification of quantum steering.

Bell non-locality between distant quantum systems--that is, joint correlations which violate a Bell inequality--can be verified without trusting the measurement devices used, nor those performing the measurements. This leads to unconditionally secure protocols for quantum information tasks such as cryptographic key distribution. However, complete verification of Bell non-locality requires high ...

متن کامل

Finite-key analysis for measurement-device-independent quantum key distribution.

Quantum key distribution promises unconditionally secure communications. However, as practical devices tend to deviate from their specifications, the security of some practical systems is no longer valid. In particular, an adversary can exploit imperfect detectors to learn a large part of the secret key, even though the security proof claims otherwise. Recently, a practical approach--measuremen...

متن کامل

Unconditionally Secure Multipartite Quantum Key Distribution

We consider the problem of secure key distribution among n trustful agents: the goal is to distribute an identical random bit-string among the n agents over a noisy channel such that eavesdroppers learn little about it. We study the general situation where the only resources required are secure bipartite key distribution and authenticated classical communication. Accordingly, multipartite quant...

متن کامل

The Exact Price for Unconditionally Secure Asymmetric Cryptography

A completely insecure communication channel can only be transformed into an unconditionally secure channel if some informationtheoretic primitive is given to start from. All previous approaches to realizing such authenticity and privacy from weak primitives were symmetric in the sense that security for both parties was achieved. We show that asymmetric information-theoretic security can, howeve...

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

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

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • CoRR

دوره abs/1209.0435  شماره 

صفحات  -

تاریخ انتشار 2012