Superconducting qubit
Qubit superconductor
- Date
- 1999 · confidence high
- Place
- NEC, Tsukuba, Japan; Yale, New Haven, United States (transmon, 2007)
- Credited to
- Yasunobu Nakamura, Yuri Pashkin and Jaw-Shen Tsai (NEC, 1999); Jens Koch, Robert Schoelkopf and Michel Devoret (transmon, Yale, 2007)
- People
- 👤 Jaw-Shen Tsai1952–👤 Jens Koch1979–👤 Michel Devoret1953–👤 Robert J. Schoelkopf1964–👤 Yasunobu Nakamura1968–👤 Yuri A Pashkin
- Field
- Knowledge & symbols
What it is
Superconducting circuit with a Josephson junction that behaves as a controllable artificial atom, in which quantum coherence was observed. It is the technology behind Google's and IBM's quantum computers.
Rival technologies: trapped ions (IonQ, Quantinuum), neutral atoms and photonics.
What it led to
- Quantum processors with tens to hundreds of qubits
- The 2019 quantum supremacy claim and error correction
- State investment in quantum computing
Built on
- Superconductivity1911
- Shor's algorithm and quantum computing1994
- Josephson junction
- Shor's algorithm (motivation)
Made possible
- Quantum supremacy (Sycamore) and error correction (Willow)2019
- quantum error correction (Willow)
- IBM Quantum