Protected qubit based on superconducting current mirror

Active solid-state devices (e.g. – transistors – solid-state diode – Thin active physical layer which is – Tunneling through region of reduced conductivity

Reexamination Certificate

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C257S030000, C257S031000, C257S034000, C257S661000, C257SE39003, C257SE39012, C257SE39014

Reexamination Certificate

active

07858966

ABSTRACT:
A qubit implementation based on exciton condensation in capacitively coupled Josephson junction chains is disclosed. The qubit may be protected in the sense that unwanted terms in its effective Hamiltonian may be exponentially suppressed as the chain length increases. Also disclosed is an implementation of a universal set of quantum gates, most of which offer exponential error suppression.

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