Zobrazeno 1 - 10
of 173
pro vyhledávání: '"Zwerger M"'
Publikováno v:
Phys. Rev. Lett. 122, 060502 (2019)
We show that genuine multipartite entanglement of all multipartite pure states in arbitrary finite dimension can be detected in a device-independent way by employing bipartite Bell inequalities on states that are deterministically generated from the
Externí odkaz:
http://arxiv.org/abs/1809.02381
Publikováno v:
Quantum Sci. Technol. 4 025009 (2019)
Complete security proofs for quantum communication protocols can be notoriously involved, which convolutes their verification, and obfuscates the key physical insights the security finally relies on. In such cases, for the majority of the community,
Externí odkaz:
http://arxiv.org/abs/1711.08897
Publikováno v:
Phys. Rev. Lett. 120, 030503 (2018)
We introduce an alternative type of quantum repeater for long-range quantum communication with improved scaling with the distance. We show that by employing hashing, a deterministic entanglement distillation protocol with one-way communication, one o
Externí odkaz:
http://arxiv.org/abs/1705.02174
Publikováno v:
Quantum Sci. Technol. 2 044001 (2017)
Quantum repeaters provide an efficient solution to distribute Bell pairs over arbitrarily long distances. While scalable architectures are demanding regarding the number of qubits that need to be controlled, here we present a quantum repeater scheme
Externí odkaz:
http://arxiv.org/abs/1611.07779
Publikováno v:
Phys. Rev. A 94, 052307 (2016)
The endeavour to develop quantum networks gave rise to a rapidly developing field with far reaching applications such as secure communication and the realisation of distributed computing tasks. This ultimately calls for the creation of flexible multi
Externí odkaz:
http://arxiv.org/abs/1604.05352
Publikováno v:
Applied Physics B, 122:50 (2016)
We review and discuss the potential of using measurement-based elements in quantum communication schemes, where certain tasks are realized with the help of entangled resource states that are processed by measurements. We consider long-range quantum c
Externí odkaz:
http://arxiv.org/abs/1506.00985
Publikováno v:
Phys. Rev. A 90, 012314 (2014)
We investigate entanglement purification protocols based on hashing, where a large number of noisy entangled pairs is jointly processed to obtain a reduced number of perfect, noiseless copies. While hashing and breeding protocols are the only purific
Externí odkaz:
http://arxiv.org/abs/1405.4207
Autor:
Lanyon, B. P., Zwerger, M., Jurcevic, P., Hempel, C., Dür, W., Briegel, H. J., Blatt, R., Roos, C. F.
Publikováno v:
Phys. Rev. Lett. 112, 100403 (2014)
We report on the experimental violation of multipartite Bell inequalities by entangled states of trapped ions. First we consider resource states for measurement-based quantum computation of between 3 and 7 ions and show that all strongly violate a Be
Externí odkaz:
http://arxiv.org/abs/1312.4810
Autor:
Lanyon, B. P., Jurcevic, P., Zwerger, M., Hempel, C., Martinez, E. A., Dür, W., Briegel, H. J., Blatt, R., Roos, C. F.
Publikováno v:
Physical Review Letters 111, 210501 (2013)
Measurement-based quantum computation (MBQC) represents a powerful and flexible framework for quantum information processing, based on the notion of entangled quantum states as computational resources. The most prominent application is the one-way qu
Externí odkaz:
http://arxiv.org/abs/1308.5102
Publikováno v:
Sci. Rep. 4, 5364 (2014)
We present a hybrid scheme for quantum computation that combines the modular structure of elementary building blocks used in the circuit model with the advantages of a measurement-based approach to quantum computation. We show how to construct optima
Externí odkaz:
http://arxiv.org/abs/1308.4561