Abstract
The generation of multi-photon quantum states in integrated waveguiding structures provides a route to the creation of quantum optical chips. In particular, the simultaneous generation of photons through spontaneous parametric down-conversion (SPDC) and their quantum walks in nonlinear waveguide arrays (WGAs) can be used to produce strongly spatially entangled biphoton states [1] with applications for quantum search algorithms [2]. Whereas up to now only arrays of single-mode nonlinear waveguides have been considered for SPDC, in general the waveguides may support several guided modes, which were demonstrated to strongly affect nonlinear wave mixing in the classical regime [3]. Here we show that using higher order modes for SPDC has a significant influence on the generated two-photon states and gives additional means to control them. In particular, we employ the symmetry of the modes to engineer effectively nonlocal photon pair generation by SPDC.
| Original language | English |
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| Title of host publication | Optics InfoBase Conference Papers |
| Place of Publication | online |
| Publisher | IEEE Publishing |
| Number of pages | 1 |
| Edition | peer reviewed |
| ISBN (Print) | 9781467374750 |
| Publication status | Published - 2014 |
| Event | European Quantum Electronics Conference EQEC 2015 - Munich, Germany Duration: 1 Jan 2015 → … |
Conference
| Conference | European Quantum Electronics Conference EQEC 2015 |
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| Period | 1/01/15 → … |
| Other | June 21-25 2015 |