Zobrazeno 1 - 10
of 242
pro vyhledávání: '"Sangouard, Nicolas"'
Autor:
Storz, Simon, Kulikov, Anatoly, Schär, Josua D., Barizien, Victor, Valcarce, Xavier, Berterottière, Florence, Sangouard, Nicolas, Bancal, Jean-Daniel, Wallraff, Andreas
Self-testing protocols enable the certification of quantum systems in a device-independent manner, i.e. without knowledge of the inner workings of the quantum devices under test. Here, we demonstrate this high standard for characterization routines w
Externí odkaz:
http://arxiv.org/abs/2408.01299
Autor:
Bock, Matthias, Sekatski, Pavel, Bancal, Jean-Daniel, Kucera, Stephan, Bauer, Tobias, Sangouard, Nicolas, Becher, Christoph, Eschner, Jürgen
Publikováno v:
npj Quantum Information 10, 63 (2024)
We report on a method to certify a unitary operation with the help of source and measurement apparatuses whose calibration throughout the certification process needs not be trusted. As in the device-independent paradigm our certification method relie
Externí odkaz:
http://arxiv.org/abs/2304.09517
Publikováno v:
Phys. Rev. Lett. 131, 040602 (2023)
Cat qubits provide appealing building blocks for quantum computing. They exhibit a tunable noise bias yielding an exponential suppression of bit flips with the average photon number and a protection against the remaining phase errors can be ensured b
Externí odkaz:
http://arxiv.org/abs/2302.06639
Autor:
Krutyanskiy, Victor, Canteri, Marco, Meraner, Martin, Bate, James, Krcmarsky, Vojtech, Schupp, Josef, Sangouard, Nicolas, Lanyon, Ben P.
Publikováno v:
Phys. Rev. Lett. 130, 213601 (2023)
A quantum repeater node is presented based on trapped ions that act as single photon emitters, quantum memories and an elementary quantum processor. The node's ability to establish entanglement across two 25 km-long optical fibers independently, then
Externí odkaz:
http://arxiv.org/abs/2210.05418
Publikováno v:
Phys. Rev. A 107, 062607 (2023)
Device-independent quantum key distribution (DIQKD) reduces the vulnerability to side-channel attacks of standard QKD protocols by removing the need for characterized quantum devices. The higher security guarantees come however, at the price of a cha
Externí odkaz:
http://arxiv.org/abs/2209.06468
Publikováno v:
Quantum 6, 875 (2022)
Here we argue that the probability that a given source produces exactly a single photon is a natural quantity to benchmark single-photon sources as it certifies the absence of multi-photon components and quantifies the efficiency simultaneously. More
Externí odkaz:
http://arxiv.org/abs/2112.11370
Autor:
Caspar, Patrik, Oudot, Enky, Sekatski, Pavel, Maring, Nicolas, Martin, Anthony, Sangouard, Nicolas, Zbinden, Hugo, Thew, Rob
Publikováno v:
Quantum 6, 671 (2022)
How can a multipartite single-photon path-entangled state be certified efficiently by means of local measurements? We address this question by constructing an entanglement witness based on local photon detections preceded by displacement operations t
Externí odkaz:
http://arxiv.org/abs/2104.08216
Autor:
Gouzien, Élie, Sangouard, Nicolas
Publikováno v:
Phys. Rev. Lett. 127, 140503 (2021)
We analyze the performance of a quantum computer architecture combining a small processor and a storage unit. By focusing on integer factorization, we show a reduction by several orders of magnitude of the number of processing qubits compared with a
Externí odkaz:
http://arxiv.org/abs/2103.06159
Autor:
Tan, Ernest Y. -Z., Sekatski, Pavel, Bancal, Jean-Daniel, Schwonnek, René, Renner, Renato, Sangouard, Nicolas, Lim, Charles C. -W.
Publikováno v:
Quantum 6, 880 (2022)
The security of finite-length keys is essential for the implementation of device-independent quantum key distribution (DIQKD). Presently, there are several finite-size DIQKD security proofs, but they are mostly focused on standard DIQKD protocols and
Externí odkaz:
http://arxiv.org/abs/2012.08714
Publikováno v:
Phys. Rev. Research 4, 013049 (2022)
Device-independent certification, also known as self-testing, aims at guaranteeing the proper functioning of untrusted and uncharacterized devices. For example, the quality of an unknown source expected to produce two-qubit maximally entangled states
Externí odkaz:
http://arxiv.org/abs/2011.03047