In quantum computing, a qubit (/ˈkjuːbɪt/) or quantum bit is a basic unit of quantum information—the quantum version of the classic binary bit physically...

a qubit can exist in a superposition of its two "basis" states, which loosely means that it is in both states simultaneously. When measuring a qubit, the...

electronic circuits using superconducting qubits as artificial atoms, or quantum dots. For superconducting qubits, the two logic states are the ground state...

In quantum computing, a charge qubit (also known as Cooper-pair box) is a qubit whose basis states are charge states (i.e. states which represent the presence...

qubit in Wiktionary, the free dictionary. A qubit is a quantum bit, a unit of quantum information — the quantum analogue of the classical bit. Qubit may...

The Qubit fluorometer is a laboratory instrument developed and distributed by Invitrogen, which is now a part of Thermo Fisher. It is used for the quantification...

In quantum computing, a qubit is a unit of information analogous to a bit (binary digit) in classical computing, but it is affected by quantum mechanical...

specifically in superconducting quantum computing, flux qubits (also known as persistent current qubits) are micrometer sized loops of superconducting metal...

superconducting quantum computing, a transmon is a type of superconducting charge qubit designed to have reduced sensitivity to charge noise. The transmon was developed...

applied to induce coupling between the qubit states (for single qubit operations) or coupling between the internal qubit states and the external motional states...

quantum gate) is a basic quantum circuit operating on a small number of qubits. Quantum logic gates are the building blocks of quantum circuits, like classical...

operate as a quantum bit, or qubit. The phase qubit is closely related, yet distinct from, the flux qubit and the charge qubit, which are also quantum bits...

the Bell's states or EPR pairs: 25  are specific quantum states of two qubits that represent the simplest examples of quantum entanglement. The Bell's...

six-photon entanglement, eight-photon entanglement, and five-photon ten-qubit cat state. This spin up/down formulation was proposed by David Bohm, who...

IBM Condor is a 1,121-qubit quantum processor created by IBM, unveiled during the IBM Quantum Summit 2023, which occurred on December 4, 2023. It is the...

Effective quantum error correction would allow quantum computers with low qubit fidelity to execute algorithms of higher complexity or greater circuit depth...

0.66. Three qubits are required for this process: the source qubit from the sender, the ancillary qubit, and the receiver's target qubit, which is maximally...

introduces a global phase e i φ {\displaystyle e^{i\varphi }} to the whole qubit quantum state. A quantum state is uniquely defined up to a phase. Because...

demonstrate a 48 logical qubit processor. To perform computation, the atoms are first trapped in a magneto-optical trap. Qubits are then encoded in the...

terms of ancilla qubits, that can be used for example in quantum error correction. One notable example for the use of ancilla qubits in quantum computing...

five-qubit error correcting code is the smallest quantum error correcting code that can protect a logical qubit from any arbitrary single qubit error...

information. An example of quantum information is the general dynamics of a qubit. An example of classical information is a text document transmitted over...

the no-cloning theorem. Alexander Holevo publishes a paper showing that n qubits can carry more than n classical bits of information, but at most n classical...

Chetan Nayak proposed a quantum Hall device that would realize a topological qubit. In 2005 Vladimir J. Goldman, Fernando E. Camino, and Wei Zhou claimed to...

The spin qubit quantum computer is a quantum computer based on controlling the spin of charge carriers (electrons and electron holes) in semiconductor...

with two control qubits and one target qubit. That is, the target qubit (third qubit) will be inverted if the first and second qubits are both 1. It is...

equation governing that system. An example is a qubit used in quantum information processing. A qubit state is most generally a superposition of the basis...

due to the different architectures and approaches. Due to this, published qubit numbers do not reflect the performance levels of the processor. This is...

An electron-on-helium qubit is a quantum bit for which the orthonormal basis states |0⟩ and |1⟩ are defined by quantized motional states or alternatively...

controlled phase shift gates, where n {\displaystyle n} is the number of qubits. This can be compared with the classical discrete Fourier transform, which...