System and method for spatial, temporal, energy-resolving detection of single photons
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0202301
(2002-07-24)
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발명자
/ 주소 |
- Polonsky,Stanislav V.
- Koch,Roger H.
- McManus,Moyra K.
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출원인 / 주소 |
- International Business Machines Corporation
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
2 인용 특허 :
2 |
초록
A system and method for providing spatial, temporal, energy-resolving detection of single photons using superconducting transmission lines.
대표청구항
▼
What is claimed is: 1. 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 ci
What is claimed is: 1. 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. 2. The method of claim 1, further comprising the step of said computer calculating said photon arrival time t0 and said photon location d using the formulae, t0=(t1+t2-L/v)/2, d=v*(t1-t2)/2. 3. The method of claim 1, wherein said superconducting transmission line is meander shaped. 4. The method of claim 1, further comprising the step of measuring a plurality of pulse properties of said two voltage pulses. 5. The method of claim 4, further comprising the step of calculating said single photon energy E based on said plurality of pulse properties. 6. The method of claim 1, further comprising the step of dividing said superconducting transmission line into a plurality of pixels. 7. The method of claim 6, wherein said plurality of pixels include spiral shaped pixels. 8. The method of claim 6, further comprising the step of determining the maximum number of pixels Np, Np=La/Lp where La is the maximum distance a pulse can travel and Lp is the length of said superconducting transmission line within one pixel. 9. The method of claim 1, further comprising the step of implementing Rapid Single Flux Quantum logic in an on-chip integrated read-out circuit. 10. The method of claim 1, wherein said superconducting transmission line includes a double meander shaped transmission line having a primary meander structure that defines columns of a first plurality of pixels and a secondary meander structure that defines rows of a second plurality of pixels. 11. The method of claim 1, wherein said superconducting transmission line includes a microstrip transmission line having a superconducting ground plane. 12. The method of claim 1, wherein said superconducting transmission line includes a coplanar waveguide transmission line. 13. The method of claim 1, wherein said superconducting transmission line comprises a plurality of superconductive strips over a superconducting ground plane to form two microstrip transmission lines arranged in a checkerboard fashion. 14. A system for providing spatial, temporal, energy-resolving detection of single photons comprising: a 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. 15. The system of claim 14, wherein said photon arrival time t0 and said photon location d are calculated using the formulae, t0=(t1+t2-L/v)/2, d=v*(t1-t2)/2. 16. The system of claim 14, wherein said superconducting transmission line is meander shaped. 17. The system of claim 16, wherein said meander shaped superconducting transmission line is divided into a plurality of pixels. 18. The system of claim 17, wherein said plurality of pixels include spiral shaped pixels. 19. The system of claim 14, further comprising a plurality of calibration curves for calculating said photon energy E from said pulse properties. 20. The system of claim 17, wherein said computer determines the maximum number of pixels Np, Np=La/Lp where La is the maximum distance a pulse can travel and Lp is the length of said superconducting transmission line within one pixel. 21. The system of claim 14, further comprising an on-chip integrated read-out circuit implementing Rapid Single Flux Quantum logic. 22. The system of claim 14, wherein said superconducting transmission line includes a double meander shaped transmission line having a primary meander structure that defines columns of a first plurality of pixels and a secondary meander structure that defines rows of a second plurality of pixels. 23. The system of claim 14, wherein said superconducting transmission line includes a microstrip transmission line having a superconducting ground plane. 24. The system of claim 14, wherein said superconducting transmission line includes a coplanar waveguide transmission line. 25. The system of claim 14, wherein said superconducting transmission line comprises a plurality of superconductive strips over a superconducting ground plane to form two microstrip transmission lines arranged in a checkerboard fashion. 26. 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.
이 특허에 인용된 특허 (2)
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Sergio Cova IT; Massimo Ghioni IT; Franco Zappa IT, Circuit for high precision detection of the time of arrival of photons falling on single photon avalanche diodes.
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Sobolewski, Roman; Gol'tsman, Grigory N.; Semenov, Alexey D.; Okunev, Oleg V.; Wilsher, Kenneth R.; Kasapi, Steven A., Superconducting single photon detector.
이 특허를 인용한 특허 (2)
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Mukhanov, Oleg A.; Kirichenko, Alexander F.; Kirichenko, Dmitri, Low-power biasing networks for superconducting integrated circuits.
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Vernik, Igor V.; Mukhanov, Oleg A.; Kadin, Alan M.; Phare, Christopher Thomas; Lipson, Michal; Bergman, Keren, System and method for cryogenic optoelectronic data link.
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