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Materials and methods are available as supporting material on Science Online.
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46449091804
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at the Centre for Integrated Photonics, CIP Technologies
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All devices were fabricated at the Centre for Integrated Photonics, CIP Technologies, www.ciphotonics.com.
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All devices were fabricated
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46449094019
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In a separate experiment with a bulk optics BS, we used this source to observe quantum interference with V, 97
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In a separate experiment with a bulk optics BS, we used this source to observe quantum interference with V = 97%.
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46449089763
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Minimal effort was made to match the waveguide and fiber modes, no tapers were used, for example, and the coupling efficiency was likely limited by a mismatch of mode size and shape
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Minimal effort was made to match the waveguide and fiber modes - no tapers were used, for example - and the coupling efficiency was likely limited by a mismatch of mode size and shape.
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29
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46449100399
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V ≡ (max, min)/max
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V ≡ (max - min)/max.
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The waveguides are designed such that the cut-off wavelength for higher-order modes is very near to the design wavelength in order to maintain a large waveguide core size
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The waveguides are designed such that the cut-off wavelength for higher-order modes is very near to the design wavelength in order to maintain a large waveguide core size.
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We cannot measure the four zero coherences in the density matrix (although they are limited by the small |11〉〈11| population) or distinguish between non-maximal coherences and rotated coherences with imaginary components for the |20〉〈02| and |02〉〈20| terms. However, neither of these effects changes the state fidelity. We have assumed a worst-case scenario throughout, i.e, we assume that the |11〉 component inside the interferometer makes no contribution to twophoton detection in T0 or T1
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We thank A. Clark, J. Fulconis, A. Gilchrist, A. Laing, S. Lardenois, G. Maxwell, and A. Stefanov for helpful discussions. This work was supported by the U.S. Disruptive Technologies Office (DTO, the U.K. Engineering and Physical Sciences Research Council (EPSRC, the U.K. Quantum Information Processing Interdisciplinary Collaboration QIP IRC, and the Leverhulme Trust
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We thank A. Clark, J. Fulconis, A. Gilchrist, A. Laing, S. Lardenois, G. Maxwell, and A. Stefanov for helpful discussions. This work was supported by the U.S. Disruptive Technologies Office (DTO), the U.K. Engineering and Physical Sciences Research Council (EPSRC), the U.K. Quantum Information Processing Interdisciplinary Collaboration (QIP IRC), and the Leverhulme Trust.
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