and the error rates of each physical qubit, a single logical qubit could be formed of up to 1,000 physical qubits. The approach of topological qubits...

Commons has media related to Qubit. Ancilla bit Electron-on-helium qubit Physical and logical qubits Unitary group W state and Greenberger–Horne–Zeilinger...

possible to spread the (logical) information of one logical qubit onto a highly entangled state of several (physical) qubits. Peter Shor first discovered...

the surface code would require approximately 1,000-10,000 physical qubits per logical data qubit, though more pathological error types could change this...

any arbitrary single qubit error. In this code, 5 physical qubits are used to encode the logical qubit. With X {\displaystyle X} and Z {\displaystyle Z}...

applicable to other superconducting qubits. Coupling to the resonators is done by placing a capacitor between the qubit and the resonator, at a point where...

between two logical qubits each of which is encoded in N physical qubits by pairing up the physical qubits of each encoded qubit ("code block"), and performing...

n qubits initialized to | 0 ⟩ {\displaystyle |0\rangle } and pairwise CNOT its qubits with the qubits in register A, such that for each p the qubits A...

entangled Bell state of qubits and distributing to two different locations, performing a Bell measurement on one of the Bell state qubits, and manipulating the...

for both qubit flip errors (X errors) and phase flip errors (Z errors). The Steane code encodes one logical qubit in 7 physical qubits and is able to...

levels of the processor. This is instead achieved through the number of logical qubits or benchmarking metrics such as quantum volume, randomized benchmarking...

flying qubits transmit information macroscopically. Qubits should be capable of converting from being a stationary qubit to being a flying qubit and vice...

|10⟩, and |11⟩. The Bell state ⁠1/√2⁠|00⟩ + ⁠1/√2⁠|11⟩ is impossible to decompose into the tensor product of two individual qubits—the two qubits are entangled...

more qubits than available in the near future. Another concern is that noise in quantum circuits may undermine results, requiring additional qubits for...

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

ability to interconvert stationary and flying qubits The ability to faithfully transmit flying qubits between specified locations DiVincenzo proposed...

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

transmon physical qubits. Improvements over past work were attributed to improved fabrication techniques, participation ratio engineering, and circuit...

(commute with each other), they describe two independent logical qubits. A system of two independent qubits has a 2 × 2 = 4 {\displaystyle 2\times 2=4} -dimensional...

hundreds, thousands, or millions of qubits necessary to create a quantum computer. Solid-state representations of qubits are much more easily scalable, but...

that encodes logical qubits into the continuous degrees of freedom of a quantum system. It is named after Daniel Gottesman, Alexei Kitaev and John Preskill...

are called "hyperfine qubits") A ground state level and an excited level (these are called the "optical qubits") Hyperfine qubits are extremely long-lived...

fabrication for making the qubits. Some of these devices have a comparably high operation temperature of a few kelvins (hot qubits) which is advantageous...

intermediate-scale qubits), resilient (reliable logical qubits), and scale (quantum supercomputers). In 2024, Microsoft applied a qubit virtualization system...

qubits. Microsoft and Atom Computing announced in late 2024 that they had been collaborating on a commercial quantum computer that has logical qubits...

device can fit eight qubits. Majorana zero modes, if confirmed, could have potential application to making topological qubits, and eventually large-scale...

a qubit array with more than 1,000 qubits: A 3,000-site atomic array based on a 2D configuration of optical tweezers holds up to 1,305 atomic qubits. 24...

that the "one" clean qubit can be upgraded to "two" clean qubits, or even l o g ( n ) {\displaystyle log(n)} many clean qubits, without modifying the...

New York since 2014 and is the primary investigator of the IBM team for the IARPA Multi-Qubit Coherent Operations and Logical Qubits programs. After graduating...

state. A stabilizer quantum error-correcting code appends ancilla qubits to qubits that we want to protect. A unitary encoding circuit rotates the global...