qubit


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Related to qubit: Quantum computing

qubit

[′kyü·bit]
(computer science)
In quantum computation, a superposition of the ground state and the excited state of an elementary two-level quantum system (such as a two-level atom or a nuclear spin), corresponding to a classical bit that is either 0 (corresponding to the ground state) or 1 (corresponding to the excited state).

qubit

(QUantum BIT) A unit of data in a quantum computer. The "bit" in qubit is somewhat misleading. Unlike a bit (binary digit) in a digital computer, which can hold a 0 or 1, a qubit can represent both a 0 and 1 at the same time or multiple states in between. In addition, the qubit is not a storage cell but typically an electron or photon, and the electron's charge or the photon's polarization determines the 0 or 1. See quantum computing.
References in periodicals archive ?
In a demonstration of a part of a quantum memory device, scientists at Tsinghua University in Beijing made a qubit consisting of a magnetically trapped, positively charged ytterbium-171 ion, which achieved a coherence time of more than 10 minutes.
Yet making a single working qubit -- assuming Microsoft has indeed reached that point -- is only the first step.
php) a statement Wednesday, Martinis said: "To enable the development of larger qubit arrays, we have developed a process for fabricating fully superconducting interconnects that are materially compatible with our existing, high fidelity, aluminum on silicon qubits.
According to McCaig, Qubit is helping Indochino to further personalize the customer experience by making suit fittings fun, memorable events--by, for example, collecting better customer data to figure out preferences such as drinks to have on hand at stores.
B and C measure each qubit in the Z basis or X basis according to the corresponding bit value of m.
This algorithm was also proven to work in a laboratory, this time in UC Santa Barbara in 2012 using a diamond chip's impurities to maintain four qubits in superposition.
A working quantum computer capable of manipulating 30 qubits
Como se muestra en la Figura 2, las oscilaciones presentes en la inversion de poblacion del sistema efectivo de dos niveles se amortiguan mas rapidamente a medida que [alpha] crece, indicando un acoplamiento mas fuerte entre el qubit y su entorno, y la consecuente perdida en la amplitud de las oscilaciones en las poblaciones.
He says that NEC has built a quantum computing device that has two qubits of memory, but other labs have built devices with three qubits of memory, and someone may build a four- or five-qubit device in another three to five years.
based Life Technologies Corporation (LIFE) said it has launched its next-generation Qubit 2.
As step 1, each qubit of both |a > and |b > is set |0 >.
The qubit and the bus are promising technologies for storing and transporting information in future quantum computers, they said.