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US 2004/0016883 A1Published application
System and method for spatial, temporal, energy-resolving detection of single photons
AssigneeInternational Business Machines Corporation
InventorsStanislav V. Polonsky, Roger H. Koch, Moyra K. McManus
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Abstract
A system and method for providing spatial, temporal, energy-resolving detection of single photons using superconducting transmission lines.
Claims26
A method for providing spatial, temporal, energy-resolving detection of single photons comprising the steps of:
- biasing D.C. current I in a superconducting transmission line having a length L and an impedance Z;
- coupling said superconducting transmission line to a read-out circuit and a computer;
- hitting said superconducting transmission line at a location d from the center of said transmission line with a single photon having energy E causing two voltage pulses to propagate along said superconducting transmission line in different directions with speed v;
- measuring the arrival times t1 and t2, respectively, of said two voltage pulses;
- and
- calculating with said computer a photon arrival time t0 and said photon location d based on t1 and t2.
3 more elements
A system for providing spatial, temporal, energy-resolving detection of single photons comprising:
- superconducting transmission line having a biased D;
- C. current, a length L and an impedance Z;
- a photon emitter emitting a single photon having energy E for hitting said superconducting transmission line at location d from the center of said transmission line causing two voltage pulses to propagate along said superconducting transmission line in different directions with speed v;
- a read-out circuit coupled to said superconducting transmission line for measuring the arrival times t1 and t2, respectively, of said two voltage pulses and for measuring a plurality of pulse properties of said two voltage pulses;
- and
- a computer coupled to an output of said read-out circuit for calculating with said computer a photon arrival time to and said photon location.
3 more elements
A system for providing spatial, temporal, energy-resolving detection of single photons comprising:
- means for biasing D.C. current I in a superconducting transmission line having a length L and an impedance Z;
- means for coupling said superconducting transmission line to a read-out circuit;
- means for coupling an output of said read-out circuit to a computer;
- means for hitting said superconducting transmission line at location d from the center of said transmission line with a single photon having energy E causing two voltage pulses to propagate along said superconducting transmission line in different directions with speed v;
- means for measuring the arrival times t1 and t2, respectively, of said two voltage pulses;
- and
- means for calculating with said computer a photon arrival time t0 and said photon location d.
4 more elements
Dependencies are inferred from the claim text.