量子機能システム研究グループ

研究紹介記事

• 2024年06月06日  Fast and faithful quantum measurements of electron spin qubits

  

  A method for rapidly and precisely measuring the quantum state of electrons in a silicon device could help scale up quantum computers

• 2024年05月17日  Scientists create an “optical conveyor belt” for quasiparticles

  

• 2024年04月04日  Tracing the main source of noise in silicon quantum computers

  

  Measurements of the noise experienced by two neighboring quantum dots will aid the design of silicon quantum computers

• 2024年03月11日  Quantum-mechanical ‘molecules’ spotted in superconducting devices

  

  Exotic quantum 'molecules’ that could be used in quantum computers have been created in Josephson junctions for the first time

• 2023年11月27日  Using Josephson junctions to control the flow of a supercurrent

  

  The superconducting equivalent of the diode has been realized using Josephson junctions, opening new possibilities for harnessing superconductivity in devices

• 2023年11月21日  Stirring a polariton condensate using a special laser beam

  

  Vortices can be created at will in a superfluid made of light

• 2023年03月31日  Connecting distant silicon qubits for scaling up quantum computers

  

  The linking of two distant qubits will help to develop larger, more complex quantum computers based on silicon quantum dots

• 2022年12月08日  Single-electron devices could manage heat flow in electronic components

  

  A nanoscale device offers insights into how single electrons interact with vibrations in the presence of a temperature gradient

• 2021年09月03日  Quantum entanglement of three spin qubits demonstrated in silicon

  

  A three-qubit entangled state has been realized in a fully controllable array of spin qubits in silicon

• 2020年06月19日  Two-electron qubit points the way to scaling up quantum computers

  

  Using building blocks based on two electrons rather than one could help to realize larger quantum computers

• 2020年05月15日  High-frequency noise is the biggest limitation for quantum computers

  

  A noise-canceling experiment reveals an unexpected source of noise during quantum computations

• 2020年01月07日  Device splits and recombines superconducting electron pairs

  

  A nanowire device could help explore a form of superconductivity that features exotic particles with potential uses in quantum computing

• 2019年06月21日  New method allows the spin of a quantum dot to be measured without changing it

  

  Accurate quantum computing is closer to reality, thanks to quantum non-demolition measurements

• 2018年03月23日  Reducing noise in silicon quantum dots boosts calculation precision

  

  The quantum equivalents of computer bits can be manipulated quicker and more precisely by using techniques that liberate them from intrinsic ‘hyperfine noise’

• 2017年04月14日  Putting a block on dot-to-dot

  

  Optimizing the tunneling of electrons between nanoscale electronic structures could aid the development of quantum computers

• 2016年12月16日  Exotic quantum technology realized using normal silicon

  

  Quantum circuits based on industry-standard silicon offer a route to scalable quantum computers

• 2015年08月07日  Spins in artificial atoms resemble those in natural ones

  

  A study of an artificial molecule containing five electrons reveals similarities with spin filling of natural atoms