Qubit Zoo

Superconducting circuit protected by two-Cooper-pair tunneling

1 min read

Abstract

The proposal introduces an effective element that transfers pairs of Cooper pairs, yielding a nearly degenerate ground-state manifold indexed by Cooper-pair parity.

Key Results

  • These dynamics give rise to a nearly degenerate ground state manifold indexed by the parity of tunneled Cooper pairs.
  • We show that, when the circuit element is shunted by a large capacitance, this manifold can be used as a logical qubit that we expect to be insensitive to multiple relaxation and dephasing mechanisms.

Graph View

Backlinks