Toward large-scale fault-tolerant universal photonic quantum computing
Photonic quantum computing is one of the leading approaches to universal quantum
computation. However, large-scale implementation of photonic quantum computing has …
computation. However, large-scale implementation of photonic quantum computing has …
Deterministic quantum teleportation of photonic quantum bits by a hybrid technique
Quantum teleportation allows for the transfer of arbitrary unknown quantum states from a
sender to a spatially distant receiver, provided that the two parties share an entangled state …
sender to a spatially distant receiver, provided that the two parties share an entangled state …
Experimental proof of nonlocal wavefunction collapse for a single particle using homodyne measurements
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 …
large distances; however, it is never detected in two (or more) places. This strange …
Quantum machine learning over infinite dimensions
Machine learning is a fascinating and exciting field within computer science. Recently, this
excitement has been transferred to the quantum information realm. Currently, all proposals …
excitement has been transferred to the quantum information realm. Currently, all proposals …
Entanglement swap** between discrete and continuous variables
We experimentally realize “hybrid” entanglement swap** between discrete-variable (DV)
and continuous-variable (CV) optical systems. DV two-mode entanglement as obtainable …
and continuous-variable (CV) optical systems. DV two-mode entanglement as obtainable …
Repeat-until-success cubic phase gate for universal continuous-variable quantum computation
To achieve universal quantum computation using continuous variables, one needs to jump
out of the set of Gaussian operations and have a non-Gaussian element, such as the cubic …
out of the set of Gaussian operations and have a non-Gaussian element, such as the cubic …
Quantum simulation of quantum field theory using continuous variables
The year 1982 is often credited as the year that theoretical quantum computing was started
with a keynote speech by Richard Feynman, who proposed a universal quantum simulator …
with a keynote speech by Richard Feynman, who proposed a universal quantum simulator …
Creation and measurement of broadband squeezed vacuum from a ring optical parametric oscillator
We report a 65 MHz-bandwidth triangular-shaped optical parametric oscillator (OPO) for
squeezed vacuum generation at 860 nm. The triangle structure of our OPO enables the …
squeezed vacuum generation at 860 nm. The triangle structure of our OPO enables the …
Time-domain programmable beam-splitter operations for an optical phase-sensitive non-Gaussian state
D Okuno, T Yoshida, R Arita, T Kashiwazaki, T Umeki… - Physical Review A, 2024 - APS
We present a loop-based optical processor enabling time-domain programmable beam-
splitter (BS) operations for a phase-sensitive non-Gaussian state. The loop itself is of high …
splitter (BS) operations for a phase-sensitive non-Gaussian state. The loop itself is of high …
Generation of a cat state in an optical sideband
We propose a method to subtract a photon from a double sideband mode of continuous-
wave light. The central idea is to use phase modulation as a frequency sideband beam …
wave light. The central idea is to use phase modulation as a frequency sideband beam …