Picture of offices in the City of London

Open Access research that is better understanding work in the global economy...

Strathprints makes available scholarly Open Access content by researchers in the Department of Work, Employment & Organisation based within Strathclyde Business School.

Better understanding the nature of work and labour within the globalised political economy is a focus of the 'Work, Labour & Globalisation Research Group'. This involves researching the effects of new forms of labour, its transnational character and the gendered aspects of contemporary migration. A Scottish perspective is provided by the Scottish Centre for Employment Research (SCER). But the research specialisms of the Department of Work, Employment & Organisation go beyond this to also include front-line service work, leadership, the implications of new technologies at work, regulation of employment relations and workplace innovation.

Explore the Open Access research of the Department of Work, Employment & Organisation. Or explore all of Strathclyde's Open Access research...

Silicon photonic processor of two-qubit entangling quantum logic

Santagati, R and Silverstone, J W and Strain, M J and Sorel, M and Miki, S and Yamashita, T and Fujiwara, M and Sasaki, M and Terai, H and Tanner, M G and Natarajan, C M and Hadfield, R H and O'Brien, J L and Thompson, M G (2017) Silicon photonic processor of two-qubit entangling quantum logic. Journal of Optics (United Kingdom), 19 (11). ISSN 2040-8978

[img]
Preview
Text (Santagati-etal-JO-2017-Silicon-photonic-processor-of-two-qubit-entangling-quantum-logic)
Santagati_etal_JO_2017_Silicon_photonic_processor_of_two_qubit_entangling_quantum_logic.pdf
Final Published Version
License: Creative Commons Attribution 3.0 logo

Download (2MB) | Preview

Abstract

Entanglement is a fundamental property of quantum mechanics, and is a primary resource in quantum information systems. Its manipulation remains a central challenge in the development of quantum technology. In this work, we demonstrate a device which can generate, manipulate, and analyse two-qubit entangled states, using miniature and mass-manufacturable silicon photonics. By combining four photon-pair sources with a reconfigurable six-mode interferometer, embedding a switchable entangling gate, we generate two-qubit entangled states, manipulate their entanglement, and analyse them, all in the same silicon chip. Using quantum state tomography, we show how our source can produce a range of entangled and separable states, and how our switchable controlled-Z gate operates on them, entangling them or making them separable depending on its configuration.