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Quantum Uncertainty

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A First Introduction to Quantum Physics

Part of the book series: Undergraduate Lecture Notes in Physics ((ULNP))

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Abstract

In this chapter, we show how uncertainty relations arise naturally from quantum theory for position and momentum, time and energy, and so on. We explore the meaning of these relations and apply them to the quantum mechanical description of the pendulum. We then use our new-found knowledge of the pendulum to construct Schrödinger cat-like states in opto-mechanical systems. Finally, we show how we can use entanglement to enhance the precision of measurements.

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Notes

  1. 1.

    W. Heisenberg, Über den anschaulichen Inhalt der quantentheoretischen Kinematik und Mechanik, Zeitschrift für Physik, 43 172, 1927.

  2. 2.

    H. P. Robertson, The Uncertainty Principle, Phys. Rev. 34 163, 1929.

  3. 3.

    A. Einstein, B. Podolsky, and N. Rosen, Can Quantum-Mechanical Description of Physical Reality be Considered Complete?, Phys. Rev. 47 777, 1935.

  4. 4.

    J. S. Bell, On the Einstein Podolsky Rosen Paradox, Physics 1 195, 1964.

  5. 5.

    E. Schrödinger, Die gegenwärtige Situation in der Quantenmechanik, Naturwissenschaften 23 807, 1935.

  6. 6.

    S. Gerlich et al., Quantum interference of large organic molecules, Nature Communications 2 263, 2011.

  7. 7.

    M. Holland and K. Burnett, Interferometric detection of optical phase shifts at the Heisenberg limit, Phys. Rev. Lett. 71 1355, 1993.

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Correspondence to Pieter Kok .

9.1 Electronic supplementary material

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Kok, P. (2023). Quantum Uncertainty. In: A First Introduction to Quantum Physics. Undergraduate Lecture Notes in Physics. Springer, Cham. https://doi.org/10.1007/978-3-031-16165-0_9

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