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	<!-- Quantum index refresh 2026-05-22 00:41:46 +02:00 -->		<!-- Quantum index refresh 2026-05-22 01:16:52 +02:00 -->

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← Older revision		Revision as of 22:39, 21 May 2026
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	~~[[File:CT-logo.png~~\|~~150px~~\|~~right~~\|~~link=~~Quantum ~~Collection Index]]~~		{{Short description\|Quantum eraser experiment with delayed measurement choices}}
	~~[[File~~:Quantum ~~gravity combination.png~~\|Quantum ~~gravity\|thumb~~\|~~230px]]<br><br><br>~~
	=~~<pre>Collection of~~ Physics:Quantum ~~Book I</pre>~~=		{{ScholarlyWiki page top
	~~<div style~~=~~"text-align:center;">~~ [[File:~~1-String Theory~~.~~jpg~~\|~~40px~~\|~~link=Book~~:~~Quantum Collection/Gallery~~]]~~<br> [[Book:~~Quantum Collection~~/Gallery\|Gallery]] </div>~~		\|backlink={{Quantum book backlink\|Quantum optics and experiments}}
	~~{{#invoke:PhysicsQC\|tocHeadingAndList\|Physics:Quantum basics/See also~~}}		{{Quantum article nav\|previous=Physics:Quantum eraser experiment\|previous label=Quantum eraser experiment\|next=Physics:Quantum Ultra fast lasers\|next label=Ultra fast lasers}}
	<!-~~-{{~~:~~Physics:Quantum basics/See also}}~~-->		\|image=[[File:Quantum_Delayed_choice_quantum_eraser_educational_yellow.png\|430px\|Delayed-choice quantum eraser: interference and which-path information depend on the measurement context.]]
			\|text='''Quantum delayed-choice quantum eraser''' is a planned ScholarlyWiki page in the Quantum Collection about delayed-choice quantum eraser experiments.
			}}

			== Overview ==
			Placeholder: explain how delayed measurement choices can sort events into interference and non-interference patterns without changing past events.

			== Key ideas ==
			Placeholder: cover entangled photons, which-path information, interference, coincidence counting, delayed measurement.

	=~~References~~=		== Experimental idea ==
	~~{{reflist\|3}}~~		Placeholder: develop this section with definitions, experimental details, formulas, and links to related Quantum Collection pages.
	~~==Further reading~~==

	~~{{Author\|Harold Foppele}}~~		== Which-path information ==
	= ~~License of the Book~~=		Placeholder: develop this section with definitions, experimental details, formulas, and links to related Quantum Collection pages.
	~~{{imbox \| text = Copyright ? 2026 H. Foppele~~ and ~~contributors. All rights reserved~~.~~}} [[Category:HandWiki encyclopedias]]~~

			== Coincidence patterns ==
			Placeholder: develop this section with definitions, experimental details, formulas, and links to related Quantum Collection pages.

			== Interpretation ==
			Placeholder: develop this section with definitions, experimental details, formulas, and links to related Quantum Collection pages.

			== See also ==
			{{#invoke:PhysicsQC\|tocHeadingAndList\|Physics:Quantum basics/See also}}

			== References ==
			{{reflist\|3}}

			{{Author\|Harold Foppele}}

	~~<!--~~ Quantum ~~index refresh 2026-05-22 00:36:17 +02:00 -~~->		{{Sourceattribution\|Physics:Quantum delayed-choice quantum eraser\|1}}

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2026-05-21T22:36:18Z

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← Older revision		Revision as of 22:36, 21 May 2026
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	{{~~Short description~~\|~~Principle that an unknown quantum state cannot be copied perfectly~~}}		[[File:CT-logo.png\|150px\|right\|link=Quantum Collection Index]]
			[[File:Quantum gravity combination.png\|Quantum gravity\|thumb\|230px]]<br><br><br>
			=<pre>Collection of Physics:Quantum Book I</pre>=
			<div style="text-align:center;"> [[File:1-String Theory.jpg\|40px\|link=Book:Quantum Collection/Gallery]]<br> [[Book:Quantum Collection/Gallery\|Gallery]] </div>
			{{#invoke:PhysicsQC\|tocHeadingAndList\|Physics:Quantum basics/See also}}
			<!--{{:Physics:Quantum basics/See also}}-->

	~~{{ScholarlyWiki page top~~		=References=
	~~\|backlink=~~{{~~Quantum book backlink~~\|~~Quantum information and computing~~}}		{{reflist\|3}}
	~~{{Quantum article nav\|previous~~=~~Physics:Quantum BB84\|previous label~~=~~BB84\|next~~=~~Physics:Quantum Computing Algorithms in the NISQ Era\|next label~~=~~Computing Algorithms in the NISQ Era}}~~		==Further reading==
	~~\|image=[[File:Quantum_No_cloning_theorem_educational_yellow.png\|430px\|The no-cloning theorem: an unknown quantum state cannot be copied perfectly by a physical operation.]]~~
	~~\|text='''Quantum No-cloning theorem''' is a planned ScholarlyWiki page in the Quantum Collection about the no-cloning theorem in quantum information.~~
	}}

	== ~~Overview~~ ==		{{Author\|Harold Foppele}}
	~~Placeholder~~: ~~explain why linear quantum evolution forbids perfect copying of an arbitrary unknown quantum state.~~		= License of the Book=
			{{imbox \| text = Copyright ? 2026 H. Foppele and contributors. All rights reserved.}} [[Category:HandWiki encyclopedias]]

	~~== Key ideas ==~~
	~~Placeholder: cover linearity, unknown states, quantum copying limits, cryptography, measurement disturbance.~~

	~~== Statement of the theorem ==~~
	~~Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.~~

	~~== Simple linearity argument ==~~
	~~Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.~~

	~~== Consequences for cryptography ==~~
	~~Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.~~

	~~== Relation to measurement ==~~
	~~Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.~~

	~~== See also ==~~
	~~{{#invoke:PhysicsQC\|tocHeadingAndList\|Physics:Quantum basics/See also}}~~

	~~== References ==~~
	~~{{reflist\|3}}~~

	~~{{Author\|Harold Foppele}}~~

	~~{{Sourceattribution\|Physics~~:~~Quantum No~~-~~cloning theorem\|1}}~~		<!-- Quantum index refresh 2026-05-22 00:36:17 +02:00 -->

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2026-05-21T22:19:12Z

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← Older revision		Revision as of 22:19, 21 May 2026
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	{{Short description\|~~Photonic sampling model for~~ quantum ~~advantage studies~~}}		{{Short description\|Principle that an unknown quantum state cannot be copied perfectly}}

	{{ScholarlyWiki page top		{{ScholarlyWiki page top
	\|backlink={{Quantum book backlink\|Quantum information and computing}}		\|backlink={{Quantum book backlink\|Quantum information and computing}}
	{{Quantum article nav\|previous=Physics:Quantum ~~Noisy Qubits~~\|previous label=~~Noisy Qubits~~\|next=Physics:Quantum ~~random access code~~\|next label=~~Random access code~~}}		{{Quantum article nav\|previous=Physics:Quantum BB84\|previous label=BB84\|next=Physics:Quantum Computing Algorithms in the NISQ Era\|next label=Computing Algorithms in the NISQ Era}}
	\|image=[[File:~~Quantum_Boson_sampling_educational_yellow~~.png\|430px\|~~Boson sampling with photons passing through~~ a ~~multiport interferometer and sampled at detectors~~.]]		\|image=[[File:Quantum_No_cloning_theorem_educational_yellow.png\|430px\|The no-cloning theorem: an unknown quantum state cannot be copied perfectly by a physical operation.]]
	\|text='''Quantum ~~Boson sampling~~''' is a planned ScholarlyWiki page in the Quantum Collection about ~~boson sampling and photonic~~ quantum ~~computation~~.		\|text='''Quantum No-cloning theorem''' is a planned ScholarlyWiki page in the Quantum Collection about the no-cloning theorem in quantum information.
	}}		}}

	== Overview ==		== Overview ==
	Placeholder: ~~describe boson sampling as a restricted photonic model in which identical photons pass through a~~ linear ~~optical network and produce output samples~~.		Placeholder: explain why linear quantum evolution forbids perfect copying of an arbitrary unknown quantum state.

	== Key ideas ==		== Key ideas ==
	Placeholder: cover ~~indistinguishable photons~~, ~~linear optics~~, ~~interferometers~~, ~~output distributions~~, ~~quantum advantage~~.		Placeholder: cover linearity, unknown states, quantum copying limits, cryptography, measurement disturbance.

	== ~~Linear optical network~~ ==		== Statement of the theorem ==
	Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.		Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.

	== ~~Sampling task~~ ==		== Simple linearity argument ==
	Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.		Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.

	== ~~Computational significance~~ ==		== Consequences for cryptography ==
	Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.		Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.

	== ~~Experimental considerations~~ ==		== Relation to measurement ==
	Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.		Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.

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	{{Author\|Harold Foppele}}		{{Author\|Harold Foppele}}

	{{Sourceattribution\|Physics:Quantum ~~Boson sampling~~\|1}}		{{Sourceattribution\|Physics:Quantum No-cloning theorem\|1}}

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2026-05-21T22:19:11Z

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← Older revision		Revision as of 22:19, 21 May 2026
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	{{Short description\|~~Maximally entangled two-qubit~~ quantum ~~state~~}}		{{Short description\|Photonic sampling model for quantum advantage studies}}

	{{ScholarlyWiki page top		{{ScholarlyWiki page top
	\|backlink={{Quantum book backlink\|Quantum information and computing}}		\|backlink={{Quantum book backlink\|Quantum information and computing}}
	{{Quantum article nav\|previous=Physics:Quantum ~~Entanglement~~\|previous label=~~Entanglement~~\|next=Physics:Quantum ~~Gates and circuits~~\|next label=~~Gates and circuits~~}}		{{Quantum article nav\|previous=Physics:Quantum Noisy Qubits\|previous label=Noisy Qubits\|next=Physics:Quantum random access code\|next label=Random access code}}
	\|image=[[File:~~Quantum_Bell_state_educational_yellow~~.png\|430px\|~~Bell states as correlated two-qubit entangled states used in quantum information~~.]]		\|image=[[File:Quantum_Boson_sampling_educational_yellow.png\|430px\|Boson sampling with photons passing through a multiport interferometer and sampled at detectors.]]
	\|text='''Quantum ~~Bell state~~''' is a planned ScholarlyWiki page in the Quantum Collection about ~~Bell states~~ and ~~two-qubit entanglement~~.		\|text='''Quantum Boson sampling''' is a planned ScholarlyWiki page in the Quantum Collection about boson sampling and photonic quantum computation.
	}}		}}

	== Overview ==		== Overview ==
	Placeholder: ~~introduce Bell states~~ as ~~maximally entangled two-qubit states~~ and ~~explain why they are central in quantum information~~.		Placeholder: describe boson sampling as a restricted photonic model in which identical photons pass through a linear optical network and produce output samples.

	== Key ideas ==		== Key ideas ==
	Placeholder: cover ~~entanglement~~, ~~two-qubit correlations~~, ~~Bell basis~~, quantum ~~teleportation, superdense coding~~.		Placeholder: cover indistinguishable photons, linear optics, interferometers, output distributions, quantum advantage.

	== ~~Bell basis~~ ==		== Linear optical network ==
	Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.		Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.

	== ~~Correlations~~ ==		== Sampling task ==
	Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.		Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.

	== ~~Preparation in circuits~~ ==		== Computational significance ==
	Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.		Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.

	== ~~Uses in protocols~~ ==		== Experimental considerations ==
	Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.		Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.

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	{{Author\|Harold Foppele}}		{{Author\|Harold Foppele}}

	{{Sourceattribution\|Physics:Quantum ~~Bell state~~\|1}}		{{Sourceattribution\|Physics:Quantum Boson sampling\|1}}

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2026-05-21T22:19:10Z

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← Older revision		Revision as of 22:19, 21 May 2026
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	{{Short description\|~~Quantum key distribution protocol using non~~-~~orthogonal bases~~}}		{{Short description\|Maximally entangled two-qubit quantum state}}

	{{ScholarlyWiki page top		{{ScholarlyWiki page top
	\|backlink={{Quantum book backlink\|Quantum information and computing}}		\|backlink={{Quantum book backlink\|Quantum information and computing}}
	{{Quantum article nav\|previous=Physics:Quantum ~~Gates and circuits~~\|previous label=~~Gates and circuits~~\|next=Physics:Quantum ~~No-cloning theorem~~\|next label=~~No-cloning theorem~~}}		{{Quantum article nav\|previous=Physics:Quantum Entanglement\|previous label=Entanglement\|next=Physics:Quantum Gates and circuits\|next label=Gates and circuits}}
	\|image=[[File:~~Quantum_BB84_educational_yellow~~.png\|430px\|~~BB84~~ quantum ~~key distribution: basis choices, photon transmission, and eavesdropping checks~~.]]		\|image=[[File:Quantum_Bell_state_educational_yellow.png\|430px\|Bell states as correlated two-qubit entangled states used in quantum information.]]
	\|text='''Quantum ~~BB84~~''' is a planned ScholarlyWiki page in the Quantum Collection about ~~the BB84 quantum key distribution protocol~~.		\|text='''Quantum Bell state''' is a planned ScholarlyWiki page in the Quantum Collection about Bell states and two-qubit entanglement.
	}}		}}

	== Overview ==		== Overview ==
	Placeholder: ~~explain how Alice and Bob use non~~-~~orthogonal polarization or spin bases to establish a shared secret key~~ and ~~detect eavesdropping~~.		Placeholder: introduce Bell states as maximally entangled two-qubit states and explain why they are central in quantum information.

	== Key ideas ==		== Key ideas ==
	Placeholder: cover basis ~~choice~~, quantum ~~measurement disturbance, sifted keys, error checking~~, ~~privacy amplification~~.		Placeholder: cover entanglement, two-qubit correlations, Bell basis, quantum teleportation, superdense coding.

	== ~~Protocol idea~~ ==		== Bell basis ==
	Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.		Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.

	== ~~Quantum states and bases~~ ==		== Correlations ==
	Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.		Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.

	== ~~Eavesdropping and error rates~~ ==		== Preparation in circuits ==
	Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.		Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.

	== ~~Security role~~ in ~~quantum information~~ ==		== Uses in protocols ==
	Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.		Placeholder: develop this section with definitions, examples, formulas, and links to related Quantum Collection pages.

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	{{Author\|Harold Foppele}}		{{Author\|Harold Foppele}}

	{{Sourceattribution\|Physics:Quantum ~~BB84~~\|1}}		{{Sourceattribution\|Physics:Quantum Bell state\|1}}

Maintenance: Create

2026-05-21T22:19:09Z

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