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- Charge_qubit abstract "In quantum computing, a charge qubit is a qubit whose basis states are charge states (i.e. states which represent the presence or absence of excess Cooper pairs in the island). A charge qubit is formed by a tiny superconducting island (also known as a Cooper-pair box) coupled by a Josephson junction to a superconducting reservoir (see figure). The state of the qubit is determined by the number of Cooper pairs which have tunneled across the junction. In contrast with the charge state of an atomic or molecular ion, the charge states of such an "island" involve a macroscopic number of conduction electrons of the island. The quantum superposition of charge states can be achieved by tuning the gate voltage U that controls the chemical potential of the island. The charge qubit is typically read-out by electrostatically coupling the island to an extremely sensitive electrometer such as the radio-frequency single-electron transistor.Typical T2 coherence times for a charge qubit are on the order of 1–2 μs. Recent work has shown T2 times approaching 100 μs using a type of charge qubit known as a transmon inside a three-dimensional superconducting cavity. Understanding the limits of T2 is an active area of research in the field of superconducting quantum computing.".
- Charge_qubit thumbnail Cooper_pair_box_circuit.png?width=300.
- Charge_qubit wikiPageID "977983".
- Charge_qubit wikiPageRevisionID "487689491".
- Charge_qubit hasPhotoCollection Charge_qubit.
- Charge_qubit subject Category:Quantum_electronics.
- Charge_qubit subject Category:Quantum_information_science.
- Charge_qubit subject Category:Superconductivity.
- Charge_qubit comment "In quantum computing, a charge qubit is a qubit whose basis states are charge states (i.e. states which represent the presence or absence of excess Cooper pairs in the island). A charge qubit is formed by a tiny superconducting island (also known as a Cooper-pair box) coupled by a Josephson junction to a superconducting reservoir (see figure). The state of the qubit is determined by the number of Cooper pairs which have tunneled across the junction.".
- Charge_qubit label "Charge qubit".
- Charge_qubit sameAs m.03w3wd.
- Charge_qubit sameAs Q5074271.
- Charge_qubit sameAs Q5074271.
- Charge_qubit wasDerivedFrom Charge_qubit?oldid=487689491.
- Charge_qubit depiction Cooper_pair_box_circuit.png.
- Charge_qubit isPrimaryTopicOf Charge_qubit.
