Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Ukai, Ryuji"'
Autor:
Yokoyama, Shota, Ukai, Ryuji, Armstrong, Seiji C., Yoshikawa, Jun-ichi, van Loock, Peter, Furusawa, Akira
Publikováno v:
Phys. Rev. A 92, 032304 (2015)
We introduce a fully tuneable entangling gate for continuous-variable one-way quantum computation. We present a proof-of-principle demonstration by propagating two independent optical inputs through a three-mode linear cluster state and applying the
Externí odkaz:
http://arxiv.org/abs/1410.0472
Autor:
Yokoyama, Shota, Ukai, Ryuji, Yoshikawa, Jun-ichi, Marek, Petr, Filip, Radim, Furusawa, Akira
Publikováno v:
Phys. Rev. A 90, 012311 (2014)
We experimentally demonstrate, with an all-optical setup, a nonlocal deterministic quantum non-demolition interaction gate applicable to quantum states at nodes separated by a physical distance and connected by classical communication channels. The g
Externí odkaz:
http://arxiv.org/abs/1403.3497
Publikováno v:
Phys. Rev. A 90, 062324 (2014)
We consider measurement-based quantum computation that uses scalable continuous-variable cluster states with a one-dimensional topology. The physical resource, known here as the dual-rail quantum wire, can be generated using temporally multiplexed of
Externí odkaz:
http://arxiv.org/abs/1311.3538
Autor:
Yokoyama, Shota, Ukai, Ryuji, Armstrong, Seiji C., Sornphiphatphong, Chanond, Kaji, Toshiyuki, Suzuki, Shigenari, Yoshikawa, Jun-ichi, Yonezawa, Hidehiro, Menicucci, Nicolas C., Furusawa, Akira
Publikováno v:
Nature Photonics 7, 982-986 (2013)
Quantum computers promise ultrafast performance of certain tasks. Experimentally appealing, measurement-based quantum computation (MBQC) requires an entangled resource called a cluster state, with long computations requiring large cluster states. Pre
Externí odkaz:
http://arxiv.org/abs/1306.3366
Publikováno v:
Phys. Rev. Lett 107, 250501 (2011)
We experimentally demonstrate a controlled-phase gate for continuous variables in a fully measurement-based fashion. In our scheme, the two independent input states of the gate, encoded in two optical modes, are teleported into a four-mode Gaussian c
Externí odkaz:
http://arxiv.org/abs/1107.0514
We reverse a quantum nondemolition (QND) interaction and restore the signal quantum state by measurement and feedforward. This operation corresponds to quantum erasing for continuous variables (CVs). CV quantum eraser restores the coherence of the si
Externí odkaz:
http://arxiv.org/abs/1007.0314
Autor:
Miwa, Yoshichika, Ukai, Ryuji, Yoshikawa, Jun-ichi, Filip, Radim, van Loock, Peter, Furusawa, Akira
Publikováno v:
Phys. Rev. A 82, 032305 (2010)
We demonstrate experimentally how to remove an arbitrary node from a continuous-variable cluster state and how to shorten any quantum wires of such a state. These two basic operations, performed in an unconditional fashion, are a manifestation of qua
Externí odkaz:
http://arxiv.org/abs/1006.2225
Autor:
Ukai, Ryuji, Iwata, Noriaki, Shimokawa, Yuji, Armstrong, Seiji C., Politi, Alberto, Yoshikawa, Jun-ichi, van Loock, Peter, Furusawa, Akira
Publikováno v:
Phys. Rev. Lett 106, 240504 (2011)
Quantum computing promises to exploit the laws of quantum mechanics for processing information in ways fundamentally different from today's classical computers, leading to unprecedented efficiency. One-way quantum computation, sometimes referred to a
Externí odkaz:
http://arxiv.org/abs/1001.4860
Publikováno v:
Phys.Rev.A 81 (2010) 032315
We show explicitly how to realize an arbitrary linear unitary Bogoliubov transformation (LUBO) on a multi-mode quantum state through homodyne-based one-way quantum computation. Any LUBO can be approximated by means of a fixed, finite-sized, sufficien
Externí odkaz:
http://arxiv.org/abs/0910.0660