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Since its introduction 25 years ago, the quantum weak value has gradually transitioned from a theoretical curiosity to a practical laboratory tool. While its utility is apparent in the recent explosion of weak value experiments, its interpretation has historically been a subject of confusion. Here a pragmatic introduction to the weak value in terms of… (More)

- Robert W. Boyd, Anand Jha, +7 authors Charles M. Santori
- 2011

We describe a procedure to construct a free-space quantum key distribution system that can carry many bits of information per photon. We also describe the current status of our laboratory implementation of these plans.

- Mohammad Mirhosseini, Mehul Malik, Zhimin Shi, Robert W Boyd
- Nature communications
- 2013

Orbital angular momentum (OAM) of light is an attractive degree of freedom for fundamental studies in quantum mechanics. In addition, the discrete unbounded state-space of OAM has been used to enhance classical and quantum communications. Unambiguous measurement of OAM is a key part of all such experiments. However, state-of-the-art methods for separating… (More)

- Mohammad Mirhosseini, Omar S Magaña-Loaiza, Changchen Chen, Brandon Rodenburg, Mehul Malik, Robert W Boyd
- Optics express
- 2013

We report a technique for encoding both amplitude and phase variations onto a laser beam using a single digital micro-mirror device (DMD). Using this technique, we generate Laguerre-Gaussian and vortex orbital-angular-momentum (OAM) modes, along with modes in a set that is mutually unbiased with respect to the OAM basis. Additionally, we have demonstrated… (More)

This paper is concerned with the modeling of the human body as a spring mass system. Based on certain assumptions, an analysis for evaluating the mass and stiffness values of the model is developed. As an illustration of the modeling procedure, a 15-degree-of-freedom model of a male body is considered. The computed natural frequencies of the model are found… (More)

- Mehul Malik, Malcolm O'Sullivan, +5 authors Robert W Boyd
- Optics express
- 2012

We describe an experimental implementation of a free-space 11-dimensional communication system using orbital angular momentum (OAM) modes. This system has a maximum measured OAM channel capacity of 2.12 bits/photon. The effects of Kolmogorov thin-phase turbulence on the OAM channel capacity are quantified. We find that increasing the turbulence leads to a… (More)

- Omar S. Magaña-Loaiza, Gregory A. Howland, Mehul Malik, John C. Howell, Robert W. Boyd, Omar S. Maga
- 2013

- Malcolm N O'Sullivan, Mohammad Mirhosseini, Mehul Malik, Robert W Boyd
- Optics express
- 2012

We present a novel method for efficient sorting of photons prepared in states of orbital angular momentum (OAM) and angular position (ANG). A log-polar optical transform is used in combination with a holographic beam-splitting method to achieve better mode discrimination and reduced cross-talk than reported previously. Simulating this method for 7 modes, we… (More)

- Mario Krenn, Mehul Malik, Robert Fickler, Radek Lapkiewicz, Anton Zeilinger
- Physical review letters
- 2016

Quantum mechanics predicts a number of, at first sight, counterintuitive phenomena. It therefore remains a question whether our intuition is the best way to find new experiments. Here, we report the development of the computer algorithm Melvin which is able to find new experimental implementations for the creation and manipulation of complex quantum states.… (More)

- Mehul Malik, Mohammad Mirhosseini, Martin P J Lavery, Jonathan Leach, Miles J Padgett, Robert W Boyd
- Nature communications
- 2014

The measurement of a quantum state poses a unique challenge for experimentalists. Recently, the technique of 'direct measurement' was proposed for characterizing a quantum state in situ through sequential weak and strong measurements. While this method has been used for measuring polarization states, its real potential lies in the measurement of states with… (More)