Direct measurement of an one-million-dimensional photonic state

  title={Direct measurement of an one-million-dimensional photonic state},
  author={Zhimin Shi and Mohammad Mirhosseini and Jessica Margiewicz and Mehul Malik and Freida Rivera and Ziyi Zhu and Robert W. Boyd},
  journal={2016 Progress in Electromagnetic Research Symposium (PIERS)},
The state vector of a pure quantum system is a set of complex probability amplitudes used for describing the system in each state of a given Hilbert space. Characterizing the state of a quantum system is crucial for fundamental studies in quantum mechanics as well as for manipulating and utilizing quantum systems for practical applications.Here we describe a scan-free direct measurement approach [1] that is capable of simultaneously measuring the entire state vector of a pure quantum system… 
4 Citations

Figures from this paper

Quantum State Interferography.

This Letter presents an interferometric method, in which any qubit state, whether mixed or pure, can be inferred from the visibility, phase shift, and average intensity of an interference pattern using a single-shot measurement, and shows that QSI is more resource efficient than QST for quantification of entanglement in pure bipartite qubits.

Strong Measurements Give a Better Direct Measurement of the Quantum Wave Function.

This work shows that a direct measurement of the wave function can be obtained by using measurements of arbitrary strength, and gives the exact expression of the difference between the original and reconstructed wave function obtained by the weak measurement approach.

Observation of the full spiral spectrum of a light beam with single-pixel detection

We demonstrate experimentally a simple and easy-to-use technique aimed at measuring the complex orbital angular momentum spectrum of an arbitrary optical field making use of just polarization



Scan-free direct measurement of an extremely high-dimensional photonic state

Retrieving the vast amount of information carried by a photon is an enduring challenge in quantum metrology science and quantum photonics research. The transverse spatial state of a photon is a

Efficient separation of the orbital angular momentum eigenstates of light.

A method is demonstrated which uses a series of unitary optical transformations to enable the measurement of light's OAM with an experimental separation efficiency of >92%, which makes it particularly attractive for enhancing the information capacity of multi-level quantum cryptography systems.

How the result of a measurement of a component of the spin of a spin-1/2 particle can turn out to be 100.

We have found that the usual measuring procedure for preselected and postselected ensembles of quantum systems gives unusual results. Under some natural conditions of weakness of the measurement, its

Optical Coherence and Quantum Optics

Preface 1. Elements of probability theory 2. Random (or stochastic) processes 3. Some useful mathematical techniques 4. Second-order coherence theory of scalar wavefields 5. Radiation from sources of

The sense in which a "weak measurement" of a spin-(1/2 particle's spin component yields a value 100.

The analysis requires no approximations and helps to clarify the physics behind the effect and describes an optical analog of the experiment and discusses the conditions necessary to realize the effect experimentally.

Progress in optics

  • K. Stetson
  • Physics
    IEEE Journal of Quantum Electronics
  • 1980
Have you ever felt that the very title, Progress in Optics, conjured an image in your mind? Don’t you see a row of handsomely printed books, bearing the editorial stamp of one of the most brilliant

Orbital angular momentum: origins, behavior and applications

As they travel through space, some light beams rotate. Such light beams have angular momentum. There are two particularly important ways in which a light beam can rotate: if every polarization vector

New Journal of Physics 14

  • 115014
  • 2012

Nature Photonics 7

  • 316
  • 2013

and G

  • Leuchs, New Journal of Physics 14, 115014
  • 2012