Furusawa & Yoshikawa & Takeda Lab
Department of Applied Physics, School of Engineering,
The University of Tokyo
We are making researches on Quantum Optics and Quantum Information Science at Department of Applied Physics, The University of Tokyo.

Google Scholar about Prof. Akira Furusawa

S. Takeda and A. Furusawa, "Toward large-scale fault-tolerant universal photonic quantum computing" was featured in Scilight !! (6.2019)

"On-demand photonic entanglement synthesizer" appeared in Science Advances !! (5.2019)

You can watch Professor Akira Furusawa public talk video at the Australian National University!!(2019.4)

Timeline by Michael Crichton was inspired by our quantum teleportation experiment!!

Loop-based photonic quantum computer

Prof.Furusawa received Medal with Purple Ribon!!

Ceremony

One-way quantum computing with an unlimited time-domain multiplexed continuous-variable cluster state

A. Furusawa
"Perspective on hybrid quantum information processing: A way for large-scale quantum information processing"
Journal of Optics 19, 070401-1-3 (2017)

Chosen as "Paper of the Week"

UT-ANU Workshop (February.2019)@Kioloa Coastal Campus

The 13th Japan-US Joint Seminar on Quantum Electronics and Laser Spectroscopy@Kanazawa, Japan (Sep.2018)

UT-ANU Workshop 2018 (March. 2018)

UT-ANU Workshop 2017@ANU

UT-ANU Workshop 2017@The Univ. of Tokyo

Prof. Furusawa received Toray Science and Technology Prize 2014!!

Continuous-variable entanglement on a chip

G. Masada et al., Nature Photonics 9, 316-319 (2015).

Experimental proof of nonlocal wavefunction collapse
for a single particle using homodyne measurements

M. Fuwa et al., Nature Communications, 6, 6665 (2015)

Ultra-Large-Scale continuous-variable cluster states
multiplexed in the time domain

S. Yokoyama et al., Nature Photonics 7, 982-986 (2013).

超大規模量子エンタングルド状態の生成法について

Deterministic quantum teleportation of photonic qubits by a hybrid technique

S. Takeda et al., Nature 500, 315-318 (2013).

Featured in DIGINFO TV

Article on the website "2 Physics"

Quantum-enhanced optical-phase tracking

H. Yonezawa et al., Science 337, 1514-1517 (2012).

Teleportation of Schrodinger's cat wave-packets of light

N. Lee et al., Science 332, 330-333 (2011).

Dynamic squeezing gate (movie)
Upper panel: input
Bottom panel: output

K. Miyata et al., PHYSICAL REVIEW A 90, 060302(R) (2014)

Research

Hybrid Quantum Teleportation

We demonstrated deterministic quantum teleportation of photonic qubits for the first time. That is, photonic qubits are always teleported in each attempt, in contrary to the former probabilistic scheme.

Optical generation of non-classical states toward universal quantum computation

Based on the continuous wave scheme, we achieved generation of arbitrary superpositions of zero- to three-photon-number states with 80% high-efficiency. In the same scheme we also generated the state required for the cubic phase gate, whose non-classicality has been verified [8].

Loop-based photonic quantum computer

We proposed a new architecture for optical quantum computation which can efficiently perform arbitrarily large-scale quantum computation with minimal optical components.

Books

The book "Quantum Teleportation and Entanglemenet"
by Prof.A.Furusawa and Dr.P.van Look was published by Wiley!!

Chap.8: On-Demand Release of a Heralded Quantum State from Concatenated Optical Cavities
J.Yoshikawa, K.Makino and A.Furusawa

Yamamoto, Semba Eds: Principles and Methods of Quantum Information Technologies
Lecture Notes in Physics (Springer)
Chap. 20: Optical Hybrid Quantum Information Processing
S. Takeda and A. Furusawa

Quantum States of Light (Springer)
A. Furusawa

Multi-Step Muti-Input One-Way Quantum Information Processing with
Spatial and Temporal Modes of Light (Springer)
R. Ukai