Maria Fuwa Shuntaro Takeda Marcin Zwierz Howard M. Wiseman Akira Furusawa
NATURE COMMUNICATIONS 6 2015年3月
A single quantum particle can be described by a wavefunction that spreads over arbitrarily large distances; however, it is never detected in two (or more) places. This strange phenomenon is explained in the quantum theory by what Einstein repudiat...
Shuntaro Takeda Maria Fuwa Peter van Loock Akira Furusawa
PHYSICAL REVIEW LETTERS 114(10) 2015年3月
We experimentally realize "hybrid" entanglement swapping between discrete-variable (DV) and continuous-variable (CV) optical systems. DV two-mode entanglement as obtainable from a single photon split at a beam splitter is robustly transferred by m...
Maria Fuwa Shunsuke Toba Shuntaro Takeda Petr Marek Ladislav Mista Radim Filip Peter van Loock Jun-ichi Yoshikawa Akira Furusawa
PHYSICAL REVIEW LETTERS 113(22) 2014年11月
We experimentally demonstrate the noiseless teleportation of a single photon by conditioning on quadrature Bell measurement results near the origin in phase space and thereby circumventing the photon loss that otherwise occurs even in optimal gain...
ELEVENTH INTERNATIONAL CONFERENCE ON QUANTUM COMMUNICATION, MEASUREMENT AND COMPUTATION (QCMC) 1633 258-260 2014年
Hybrid quantum teleportation - continuous-variable teleportation of qubits - is a promising approach for deterministically teleporting photonic qubits. We propose how to implement it with current technology. Our theoretical model shows that faithf...
Shuntaro Takeda Takahiro Mizuta Maria Fuwa Hidehiro Yonezawa Peter van Loock Akira Furusawa
PHYSICAL REVIEW A 88(4) 2013年10月
We present a general formalism to describe continuous-variable (CV) quantum teleportation of discrete-variable (DV) states with gain tuning, taking into account experimental imperfections. Here the teleportation output is given by independently tr...
人文科学研究科
理学部