Search results for «quantum state» 31 results

• Physicists Discover Way to Control Transitions Between States of Matter

  …ape. In other words, despite being a collective state consisting of many particles, a soliton behaves like a single particle. At the same time, a Bose-Einstein condensate is a quantum state of matter where all particles, in our case polaritons, populate the ground state of the system with minimal energy. Usually, the ground state is extended through the entire area o…

  24.04.2018

• Physicists Propose New Mechanism of Radio Emission in Neutron Stars

• ITMO Physicists Use Radiofrequency Trap to “Freeze” Nanocrystals

  …n particles, constantly in motion and colliding with each other. However, if their kinetic energy were to be lowered, along with their speed and temperature, they will enter a quantum state. Such an effect can be achieved using optical cooling. Physicists from ITMO University have studied the optical cooling of mesoscopic articles using ytterbium ions. Ions of thi…

  28.12.2017

• Scientists Achieve Breakthrough in Polariton Laser Technology

  …chanical state according to the so-called Pauli Exclusion Principle, which states that two or more identical fermions (particles with half-integer spin) cannot occupy the same quantum state within a quantum system simultaneously. A polariton laser setup. Credit: bibo.kz In polariton lasers, this limitation is overcome in the following manner: electrons in suc…

  06.09.2017

• Created Chip Churns out High-Dimensional Entangled Photons

  …icated through processes like those used for integrated electronics. With an on-chip micro-ring resonator excited by a laser, photons are emitted in pairs that share a complex quantum state. The photons are constructed in a state featuring several superimposed frequency components: The photons have several colours simultaneously, and the colours of each photon in a p…

  29.06.2017

• Royal Society Member Maurice Skolnick: Why Making Science Understandable to Society Matters

  …le of managing a large number of qubits (in modern quantum computational schemes the maximum number of qubits working at the same time is approximately 16). The second is that quantum state is extremely fragile and is affected greatly by environmental factors. For that reason, we need to somehow isolate our qubits so that they remain unaffected. Scientists have alrea…

  11.05.2017

• From Laser to Market: Optics Conference Continues

  …l implementation has to be attached to real infrastructure and current challenges" explained Mr. Gleim. The particularities of this R&D is that when transmitting data in the quantum state, we use so-called "side frequencies", which compared to other approaches give a smaller error rate and maximum bandwith (read more about it here). Specialists from the company are…

  21.10.2016

• What to Do if Photons Entangle You?

  …urpose. Currently researchers aim to create quantum memory devices for the repeaters. The process of distance communication requires the interaction of light and matter, as quantum state "transfers" to the particle state. One of the promising techniques is when a photon interacts with plenty of atoms, so called "atom assembly." Thanks to that, one can record and r…

  20.10.2016

• Researchers Find Way to Enhance Photon Entanglement

  …sion, quantum teleportation and are considered to be instrumental to the rise of optical computing. Quantum entanglement occurs when entangled particles are united by a single quantum state and therefore retain correlation at distance. For example, by measuring the state of one entangled photon, scientists can determine the state of the other one. Photons become ent…

  14.10.2016

• ITMO Fellowship Stories: 'I Always Come Back to Russia'

  …on transfer is impossible without its loss. To solve this problem one should divide a line into several parts and then equip them with quantum repeaters that provide entangled quantum state. Thus information transferring through these sections can be described using Bell's theorem. It is a complex method of data transfer, using which one has to save Subscribe

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