Higher-dimensional orbital-angular-momentum-based quantum key distribution with mutually unbiased bases

By M. Mafu, A. Dudley, S. Goyal, D. Giovannini, M. Mclaren, Miles J. Padgett, T. Konrad, Francesco Petruccione, Norbert Lutkenhaus, Andrew Forbes. 2013

293 citations recorded by the source corpus.

We present an experimental study of higher-dimensional quantum key distribution protocols based on mutually unbiased bases, implemented by means of photons carrying orbital angular momentum. We perform (d + 1) mutually unbiased measurements in a classically simulated prepare-and-measure scheme and on a pair of entangled photons for dimensions ranging from d = 2 to 5. In our analysis, we pay attention to the detection efficiency and photon pair creation probability. As security measures, we determine from experimental data the average error rate, the mutual information shared between the sender and receiver, and the secret key generation rate per photon. We demonstrate that increasing the dimension leads to an increased information capacity as well as higher key generation rates per photon. However, we find that the benefit of increasing the dimension is limited by practical implementation considerations, which in our case results in deleterious effects observed beyond a dimension of d = 4.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/4c4cbde7af993630dab2870b67adbf23023135c1

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Artificial Intelligence

1. Robert Bedington
2. Dirk Englund
3. Juan Miguel Arrazola
4. Alexander Ling
5. Darius Bunandar

In Atomic and Molecular Physics, and Optics

1. Robert Bedington
2. R. Camacho
3. Dirk Englund
4. Juan Miguel Arrazola
5. Alexander Ling

Citations in the corpus

• Metropolitan quantum key distribution with silicon photonics (2017, background): “QKD has since progressed rapidly to several deployed systems that can reach point-to-point secret key generation rates in upwards of 100 kbps [5–8] and to other photonic degrees of freedom: time [9–12], frequency [13–16], phase [17], quadrature [18–21], and orbital angular momentum [22].”
• Advances in quantum cryptography (2019, unknown): “[258] M.”
• Progress in satellite quantum key distribution (2017, background): “A minority of proposals investigate options for time-bin entanglement [54], or QKD with orbital angular momenta of photons [55], but these approaches are less mature.”
• Creation and detection of optical modes with spatial light modulators (2016, unknown): “Figure adapted with permission from [151].”