Multipath wave-particle duality with a path detector in a quantum superposition

Siddiqui, Mohd Asad; Qureshi, Tabish

doi:10.1103/physreva.103.022219

Cited by 8 publications

(5 citation statements)

References 24 publications

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“…where D u is the distinguishability derived from the UQSD strategy. A similar relation was obtained in multipath interference [21][22][23].…”

Section: Introductionsupporting

confidence: 80%

“…Applying different strategies to distinguish the WWD's states gives different amounts of which-way information. Another strategy of retrieving which-way information from the WWD is the unambiguous quantum state discrimination (UQSD), which has been applied to study the wave-particle duality relation in recent years [18][19][20][21][22][23]. Reference [18] quantified the distinguishability by the upper bound of the probability of an unambiguous result and obtained the linear duality relation…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigation of wave-particle duality relations in asymmetric beam interference

Chen

Zhao

et al. 2022

npj Quantum Inf

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Wave-particle duality relations are fundamental for quantum physics. Previous experimental studies of duality relations mainly focus on the quadratic relation D2 + V2 ≤ 1, based on symmetric beam interference, while a linear form of the duality relation, predicated earlier theoretically, has never been experimentally tested. In addition, the difference between the quadratic form and the linear form has not been explored yet. In this work, with a designed asymmetric beam interference and by utilizing the polarization degree of freedom of the photon as a which-way detector, we experimentally confirm both forms of the duality relations. The results show that more path information is obtained in the quadratic case. Our findings reveal the difference between the two duality relations and have fundamental implications in better understanding these important duality relations.

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“…where D u is the distinguishability derived from the UQSD strategy. A similar relation was obtained in multipath interference [21][22][23].…”

Section: Introductionsupporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Experimental investigation of wave-particle duality relations in asymmetric beam interference

Chen

Zhao

et al. 2022

npj Quantum Inf

View full text Add to dashboard Cite

show abstract

“…The geometric coherence is an interesting quantifier of different character [23]. Complementarity relations for quantum coherence were formulated in several ways [34][35][36][37], including duality between the coherence and path information [38][39][40][41]. From the computational viewpoint, the concept of quantum coherence was examined in [42,43].…”

Section: Preliminariesmentioning

confidence: 99%

Quantum search degeneration under amplitude noise in queries to the oracle

Rastegin,

Shemet

2021

Preprint

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We examine how amplitude noise in queries to the oracle degrades a performance of quantum search algorithm. The Grover search and similar techniques are widely used in various quantum algorithms, including cases where rival parties are fighting over confidential data. Hence, the oraclebox wires become the subject of competing activity with an alteration of their normal functioning. Of course, many kinds of errors could arise in this way. Possible influence of dephasing on quantum search was already addressed in the literature. Amplitude damping is another type of errors that should be analyzed first. To study the problem, we introduce a simple model of collective distortions with the use of amplitude damping channel. All the quantities of interest should be considered as functions of the number of Grover's iterations. In particular, we investigate the success probability with respect to variations the parameter that characterizes the level of amplitude errors. The success probability degrades significantly even if the error amount is not essential. Namely, this probability soon enough reduces to the value of one half. We also study trade-off relations between quantum coherence and the success probability in the presence of amplitude noise.

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“…However, many investigations indicated that the Bohr's complementarity principle is inadequate. Especially, simultaneous observation of (or morphing between) the wave and particle aspects of photons were reported in recent years [5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Quantum reflection of single photons in a cold Rydberg atomic gas

Ou,

Zhang,

Huang

2022

Preprint

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We propose and analyze a scheme for realizing the quantum reflection of single photons in a cold Rydberg atomic gas via electromagnetically induced transparency, by which a deep and tunable attractive potential well can be prepared by using stored gate photons. Such a scheme is promising for designing dispersion-type single-photon switches, and may be taken as a quantum device for observing the wave and particle natures of photons simultaneously.

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Multipath wave-particle duality with a path detector in a quantum superposition

Cited by 8 publications

References 24 publications

Experimental investigation of wave-particle duality relations in asymmetric beam interference

Experimental investigation of wave-particle duality relations in asymmetric beam interference

Quantum search degeneration under amplitude noise in queries to the oracle

Quantum reflection of single photons in a cold Rydberg atomic gas

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