Six Quantum Pieces

Scarani, Valerio; Chua, Lynn; Liu, Shi Yang

doi:10.1142/7965

Cited by 11 publications

(10 citation statements)

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“…[17][18][19][20][21] Examples of such systems are a single photon that can be found in two distinct beams in an interferometer, a spin ½ particle which can be found in a "spin up" or "spin down" state along a given axis, and a two-level atom with a ground state and only one excited state. In each case, linear superpositions of the two states are also possible.…”

Section: Introductionmentioning

confidence: 99%

Enhancing student learning of two-level quantum systems with interactive simulations

Kohnle

Baily

Campbell

et al. 2015

American Journal of Physics

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The QuVis Quantum Mechanics Visualization project aims to address challenges of quantum mechanics instruction through the development of interactive simulations for the learning and teaching of quantum mechanics. In this article, we describe evaluation of simulations focusing on two-level systems developed as part of the Institute of Physics Quantum Physics resources. Simulations are research-based and have been iteratively refined using student feedback in individual observation sessions and in-class trials. We give evidence that these simulations are helping students learn quantum mechanics concepts at both the introductory and advanced undergraduate level, and that students perceive simulations to be beneficial to their learning.

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Section: Introductionmentioning

confidence: 99%

Enhancing student learning of two-level quantum systems with interactive simulations

Kohnle

Baily

Campbell

et al. 2015

American Journal of Physics

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“…Given a set of observations, classical physics gives a clear prediction for another measurement: four outcomes can happen, each with equal probability, while the other four never happen. Quantum mechanics predicts, and experiments confirm, that exactly the opposite is the case (see Chapter 6 of [86]).…”

Section: Quantum Certaintiesmentioning

confidence: 92%

“…Nevertheless, quantum physics can produce statistics with a similar structure, in which 1/2 is replaced by p = (1 + 1/ √ 2)/4 ≈ 0.43 and 0 by 1/2 − p = (1 − 1/ √ 2)/4 ≈ 0.07. This quantum realization still violates Bell's inequalities by a comfortable margin: one would have to go down to p = 3/8, for the statistics of this family to be achievable with shared randomness (see Chapter 5 of [86]). The bottom line of it all is: quantum physics violates Bell's inequalities, therefore there is intrinsic randomness in our universe 2 .…”

Section: Measurement On Two Separate Systemsmentioning

confidence: 99%

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The Quantum Frontier

Fitzsimons,

Rieffel,

Scarani

2012

Preprint

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The success of the abstract model of computation, in terms of bits, logical operations, programming language constructs, and the like, makes it easy to forget that computation is a physical process. Our cherished notions of computation and information are grounded in classical mechanics, but the physics underlying our world is quantum. In the early 80s researchers began to ask how computation would change if we adopted a quantum mechanical, instead of a classical mechanical, view of computation. Slowly, a new picture of computation arose, one that gave rise to a variety of faster algorithms, novel cryptographic mechanisms, and alternative methods of communication. Small quantum information processing devices have been built, and efforts are underway to build larger ones. Even apart from the existence of these devices, the quantum view on information processing has provided significant insight into the nature of computation and information, and a deeper understanding of the physics of our universe and its connections with computation.We start by describing aspects of quantum mechanics that are at the heart of a quantum view of information processing. We give our own idiosyncratic view of a number of these topics in the hopes of correcting common misconceptions and highlighting aspects that are often overlooked. A number of the phenomena described were initially viewed as oddities of quantum mechanics, whose meaning was best left to philosophers, topics that respectable physicists would avoid or, at best, talk about only over a late night beer. It was quantum information processing, first quantum cryptography and then, more dramatically, quantum computing, that turned the tables and showed that these oddities could be put to practical effect. It is these applications we describe next. We conclude with a section describing some of the many questions left for future work, especially the mysteries surrounding where the power of quantum information ultimately comes from.

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“…Valerio Scarani [9] [10], popularizing Pr Aspect's demonstration, proceeds starting from the wave function and according to quantum calculation ending up to a property [7]: …”

Section: Treatment From a Wave Function Propertymentioning

confidence: 99%

And If Bell’s Inequality Were Not Violated

Serret¹

2014

JMP

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It briefly recalls the theory of Bell's inequality and some experimental measures. Then measurements are processed on one hand according to a property of the wave function, on the other hand according to the sum definition. The results of such processed measures are apparently not the same, so Bell's inequality would not be violated. It is a use of the wave function which implies the violation of the inequality, as it can be seen on the last flowcharts.

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Six Quantum Pieces

Cited by 11 publications

References 0 publications

Enhancing student learning of two-level quantum systems with interactive simulations

Enhancing student learning of two-level quantum systems with interactive simulations

The Quantum Frontier

And If Bell’s Inequality Were Not Violated

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