US 11,947,242 B1
Generation of entangled photonic states
Konrad Kieling, Potsdam (DE); Terence Rudolph, Palo Alto, CA (US); and Mercedes Gimeno-Segovia, Palo Alto, CA (US)
Assigned to PSIQUANTUM CORP., Palo Alto, CA (US)
Filed by PSIQUANTUM CORP., Palo Alto, CA (US)
Filed on Oct. 21, 2022, as Appl. No. 17/971,368.
Application 17/971,368 is a continuation of application No. 17/390,576, filed on Jul. 30, 2021, granted, now 11,543,731.
Application 17/390,576 is a continuation of application No. 16/691,459, filed on Nov. 21, 2019, granted, now 11,126,062, issued on Sep. 21, 2021.
Claims priority of provisional application 62/867,166, filed on Jun. 26, 2019.
Claims priority of provisional application 62/866,357, filed on Jun. 25, 2019.
Claims priority of provisional application 62/795,481, filed on Jan. 22, 2019.
Claims priority of provisional application 62/770,645, filed on Nov. 21, 2018.
Claims priority of provisional application 62/770,648, filed on Nov. 21, 2018.
This patent is subject to a terminal disclaimer.
Int. Cl. G02F 1/35 (2006.01); G02F 1/365 (2006.01)
CPC G02F 1/3501 (2013.01) [G02F 1/365 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method of generating an m photon entangled state, the method comprising:
iteratively performing a set of operations including:
performing a respective detection operation that includes detecting zero or more photons using a set of detectors coupled with a first plurality of modes;
determining, based on at least a number of photons detected by the set of detectors, whether photons remaining in the first plurality of modes after the respective detection operation are in an m photon entangled state or a state convertible to the m photon entangled state; and
in accordance with a determination that the photons remaining in the first plurality of modes after the respective detection operation are in the m photon entangled state or the state convertible to the m photon entangled state, ceasing iteratively performing the set of operations and outputting the photons remaining in the first plurality of modes.