Multi-resonator random access quantum memory with integrated magnet-less circulator

A method, comprising:

• routing, by a system comprising at least one processor, a quantum bit obtained at a first circulator port of a magnet-less circulator device to a second circulator port of the magnet-less circulator device, in conjunction with impeding the qubit signal flow from the first circulator port to a third circulator port of the magnet-less circulator device;
• resonating, by the system, a shared resonator and a tunable resonator at a common frequency, wherein the shared resonator is coupled to the second circulator port, to transfer the quantum bit from the second circulator port, via the shared resonator, to the tunable resonator;
• and
• resonating, by the system, the shared resonator and the tunable resonator at different frequencies from one another to store the quantum bit in the tunable resonator and prevent transfer of the quantum bit from the tunable resonator back to the second circulator port via the shared resonator.

A system, comprising:

• a group of respective quantum memory cells, comprising respective resonators coupled to a shared resonator;
• and
• a superconducting magnet-less circulator device, comprising a first circulator port, a second circulator port coupled to the shared resonator, and a third circulator port,
• wherein respective quantum bits obtained at the first circulator port at respective different times are routed to the second circulator port, wherein the respective resonators are tuned via respective radio frequency-superconducting quantum interference device (rf-SQUID) groupings coupled to the respective resonators, to respectively resonate at respective different frequencies at the respective different times to transfer the respective quantum bits from the second circulator port, via the shared resonator, to the respective resonators, and are respectively detuned to respectively store the respective quantum bits in the respective resonators and respectively prevent transfer of the respective quantum bits from the respective resonators back to the second circulator port, via the shared resonator.