# US 2014/0192390 A1 · Morphable Identity, Networkable Photonic Quantum Logic Gate System & Method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0192390 A1 - Document ID: US20140192390A1 - Status: Published application - Kind: A1 - Application number: 13/735,823 - Filed: 2013-01-07 - Published: 2014-07-10 - Earliest claimed: 2013-01-07 - Inventors: Daniel S. Klotzer - Web page: https://patentgrep.com/patent/US20140192390A1 ## CPC - G02F 3/00: Optical logic elements; Optical bistable devices - G02F 1/3511: {Self-focusing or self-trapping of light; Light-induced birefringence; Induced optical Kerr-effect} - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS ## Abstract Systems and methods of performing logical operations with photonic quantum logic gates. The logic gates utilize photon states, usually orthogonal linearly polarized states, to selectively enact self-interference operations whose outputs can be altered by inducing phase shifts in one or more portions of the section of the logic gate where the photon states undergo self-interference. The polarization direction switchings are differentially enacted and/or not enacted, in groupings of switches, to perform various logic operations. Additionally, networked logic gates with interrelated self-interference section phase shifts and output states are described that provide additional capabilities. ## Claims ### Claim 1 A photonic quantum logic gate with modifiable logic operation characteristics, comprising: a first quantum differentiator that separates first and second orthogonal states of a first photon and inputs each for individual processing by first and second quantum modifiers, respectively; said modifiers' processing involving a self-interference section operating in either a first or a second mode which output, respectively, either the same or the alternative of the input state; at least a first path of at least one state of at least a second photon arranged to alter the mode of self-interference undergone by at least one of the first photon's states in at least one of the modifiers; and a quantum integrator that assembles the first and second modifiers' outputs and channels them into a single unified output. ### Claim 2 (depends on 1) A photonic quantum logic gate with modifiable logic operation characteristics according to claim 1, further comprising a second quantum differentiator that separates the first and second orthogonal photon states of the at least a second photon, and routes said states onto the first and a second path, respectively, such that at least one of the second photon's states alters the mode of self-interference undergone by at least one of the first photon's states in at least one of the modifiers. ### Claim 3 (depends on 2) A photonic quantum logic gate with modifiable logic operation characteristics according to claim 2, wherein groupings of the self-interference mode alterations spanning complete sets of permutations of the first and second photons' states are arranged to enact one or more logical operations. ### Claim 4 (depends on 2) A photonic quantum logic gate with modifiable logic operation characteristics according to claim 2, wherein the self-interference mode alterations are engendered by routing at least a first portion of at least one of the modifiers' self-interference sections and by routing at least one of the second photon's states to both pass through at least a first Kerr media; said routings arranged so that when they are occupied the first and second photons traverse the first Kerr media concurrently to induce optical Kerr effect phase shifts that produce the alterations in the mode of self-interference of the first photon. ### Claim 5 (depends on 3) A photonic quantum logic gate with modifiable logic operation characteristics according to claim 3, wherein the first and second orthogonal photon states correspond to logical 0's and 1's, respectively, and the first and second photons correspond to the A and B inputs, respectively, of a standard logic table representation of a logic gate, and said logic operation is a NOR gate. ### Claim 6 (depends on 3) A photonic quantum logic gate with modifiable logic operation characteristics according to claim 3, wherein the first and second orthogonal photon states correspond to logical 0's and 1's, respectively, and the first and second photons correspond to the A and B inputs, respectively, of a standard logic table representation of a logic gate, and said logic operation is a NAND gate. ### Claim 7 (depends on 2) A photonic quantum logic gate with modifiable logic operation characteristics according to claim 2, with the first and second orthogonal photon states representing logical 0's and 1's, respectively, and the first and second photons representing the A and B inputs, respectively, of a standard logic table, wherein a NOR logic gate is engendered by said arranging entailing the second photon first state inducing the second mode of self-interference in both the first and second modifiers, and the second photon second state inducing the second mode of self-interference in only the second modifier. ### Claim 8 (depends on 2) A photonic quantum logic gate with modifiable logic operation characteristics according to claim 2, with the first and second orthogonal photon states representing logical 0's and 1's, respectively, and the first and second photons representing the A and B inputs, respectively, of a standard logic table, wherein a NAND logic gate is engendered by said arranging entailing the second photon first state inducing the second mode of self-interference in only the first modifier, and the second photon second state inducing the second mode of self-interference in both the first and second modifiers. ### Claim 9 (depends on 2) A photonic quantum logic gate with modifiable logic operation characteristics according to claim 2, wherein groupings of the self-interference mode alterations spanning complete sets of permutations of the first and second photons' states are arranged to enact one or more logical operations, and the self-interference mode alterations are engendered by routing at least a first portion of at least one of the first modifiers' self-interference sections and by routing at least one of the second photon's states to both pass through at least a first Kerr media concurrently; said groupings of alterations, and said logical operation being thereby enacted, being modifiable by modifying said routings and the Kerr media they concurrently traverse. ### Claim 10 A method of operating a photonic quantum logic gate with modifiable characteristics, comprising the steps of: differentiating first and second orthogonal states of a first photon and separately inputting each for individual processing by first and second quantum modifiers, respectively; said processing involving a self-interference procedure operating in either a first or a second mode which output, respectively, either the same or the alternative of the input state; arranging for at least a first path of at least one state of at least a second photon to alter the mode of self-interference undergone by at least one of the first photon's states in at least one of the modifiers; and integrating the first and second modifiers' outputs and channeling them into a single unified output. ### Claim 11 (depends on 10) A method of operating a photonic quantum logic gate with modifiable characteristics according to claim 10E1, further comprising the step of differentiating the first and second orthogonal photon states of the at least a second photon, and then routing them onto the first and a second path, respectively, such that at least one of the second photon's states alters the mode of self-interference undergone by at least one of the first photon's states in at least one of the modifiers. ### Claim 12 (depends on 11) A method of operating a photonic quantum logic gate with modifiable characteristics according to claim 11, wherein groupings of the self-interference mode alterings spanning complete sets of permutations of the first and second photons' states are arranged to enact one or more logical operations, said self-interference mode alterings engendered by routing at least a first portion of at least one of the modifiers' self-interference sections and routing at least one of the second photon's states to both pass through at least a first Kerr media; said routings arranged so that when they are occupied the first and second photons traverse the first Kerr media concurrently to induce optical Kerr effect phase shifts that produce the alterings in the mode of self-interference of the first photon. ### Claim 13 (depends on 11) A method of operating a photonic quantum logic gate with modifiable characteristics according to claim 11, with said first and second orthogonal photon states corresponding to logical 0's and 1's, respectively, and the first and second photons corresponding to the A and B inputs, respectively, of a standard logic table representation of a logic gate; and wherein a NOR logic gate operation is engendered by said arranging entailing the second photon first state inducing the second mode of self-interference in both the first and second modifiers, and the second photon second state inducing the second mode of self-interference in only the second modifier. ### Claim 14 (depends on 11) A method of operating a photonic quantum logic gate with modifiable characteristics according to claim 11, with said first and second orthogonal photon states corresponding to logical 0's and 1's, respectively, and the first and second photons corresponding to the A and B inputs, respectively, of a standard logic table representation of a logic gate; and wherein a NAND logic gate operation is engendered by said arranging entailing the second photon first state inducing the second mode of self-interference in only the first modifier, and the second photon second state inducing the second mode of self-interference in both the first and second modifiers. ### Claim 15 (depends on 11) A method of operating a photonic quantum logic gate with modifiable characteristics according to claim 11, wherein groupings of the self-interference mode alterations spanning complete sets of permutations of the first and second photons' states are arranged to enact one or more logical operations, and the self-interference mode alterations are engendered by routing at least a first portion of at least one of the first modifiers' self-interference procedures and by routing at least one of the second photon's states to both pass through at least a first Kerr media concurrently; said groupings of alterations, and said logical operation being thereby enacted, being modifiable by modifying said routings and the Kerr media they concurrently traverse. ### Claim 16 A network of photonic quantum logic gates that have modifiable logic operation characteristics, comprising: first and second photonic logic gates operating on entering first and second photons, respectively, said gates each comprising, a first quantum differentiator that separates first and second orthogonal states of the entered photon and inputs said first and second states for individual processing by first and second quantum modifiers, respectively; said modifiers' processing involving a self-interference section operating in either a first or a second mode which output, respectively, either the same or the alternative of the input state; said self-interference mode undergone by at least one of the states of the entered photon in at least one of the first gate's modifiers being altered by at least one state of a different photon; and a quantum integrator that assembles the first and second modifiers' outputs and channels them into a single output; wherein at least one output state of the self-interference section of at least one of the first logic gate's quantum modifiers is arranged to function as said at least one state of a different photon that alters the self-interference mode undergone by at least one of the second photon's states in at least one of the second logic gate's modifiers. ### Claim 17 (depends on 16) A network of photonic quantum logic gates that have modifiable logic operation characteristics according to claim 16, wherein the self-interference mode alterations are engendered by routing at least a first portion of at least one of said modifiers' self-interference sections and by routing said at least one states of a different photon to both pass through at least a first Kerr media; said routings arranged so that, when both are occupied, the occupying photon states traverse the first Kerr media concurrently to induce optical Kerr effect phase shifts that produce said self-interference mode alterations. ### Claim 18 (depends on 16) A network of photonic quantum logic gates that have modifiable logic operation characteristics according to claim 16, further wherein at least one output state of the self-interference section of at least one of the second logic gate's quantum modifiers is arranged to function as said at least one state of a different photon that alters the self-interference mode undergone by said at least one of the first photon's states in said at least one of the second logic gate's modifiers. ### Claim 19 (depends on 16) A network of photonic quantum logic gates that have modifiable logic operation characteristics according to claim 16, wherein at least one output state of the self-interference section of the second logic gate's first quantum modifier is arranged to function as said at least one state of a different photon that alters the self-interference mode undergone by the first photon's first state; and at least one output state of the self-interference section of the first logic gate's second quantum modifier is arranged to function as said at least one state of a different photon that alters the self-interference mode undergone by the second photon's second state. ### Claim 20 (depends on 16) A network of photonic quantum logic gates that have modifiable logic operation characteristics according to claim 16, wherein at least one output state of the self-interference section of the second logic gate's first quantum modifier is arranged to function as said at least one state of a different photon that alters the self-interference mode undergone by the first photon's first state; and at least one output state of the self-interference section of the first logic gate's first quantum modifier is arranged to function as said at least one state of a different photon that alters the self-interference mode undergone by the second photon's second state.