Dr. Zihao Wang Profile

Dr. Zihao Wang

Senior R&D Engineer at Irixi Technologies

SPIE Involvement:

Author

Publications (5)

Proceedings Article | 14 May 2018 Presentation

Ultraviolet integrated photonics (Conference Presentation)

Michael Fanto, Paul Thomas, Stefan Preble, Tsung-Ju Lu, Dirk Englund, Jeffrey Steidle, Zihao Wang

Proceedings Volume 10660, 1066003 (2018) https://doi.org/10.1117/12.2304998

KEYWORDS: Ultraviolet radiation, Integrated photonics, Photons, Ions, Quantum memory, Quantum information, Particles, Aluminum nitride, Ytterbium, Photonic integrated circuits

Read Abstract +

Proceedings Article | 5 October 2017 Paper

Integrated photon sources for quantum information science applications

M. Fanto, C. Tison, J. Steidle, T. Lu, Z. Wang, N. Mogent, A. Rizzo, P. Thomas, S. Preble, P. Alsing, D. Englund

Proceedings Volume 10442, 104420K (2017) https://doi.org/10.1117/12.2282154

KEYWORDS: Resonators, Waveguides, Aluminum nitride, Microrings, Silicon, Integrated photonics, Quantum information, Ultraviolet radiation, Mach-Zehnder interferometers, Avalanche photodetectors

Read Abstract +

Ring resonators are used as photon pair sources by taking advantage of the materials second or third order non- linearities through the processes of spontaneous parametric downconversion and spontaneous four wave mixing respectively. Two materials of interest for these applications are silicon for the infrared and aluminum nitride for the ultraviolet through the infrared. When fabricated into ring type sources they are capable of producing pairs of indistinguishable photons but typically suffer from an effective 50% loss. By slightly decoupling the input waveguide from the ring, the drop port coincidence ratio can be significantly increased with the trade-off being that the pump is less efficiently coupled into the ring. Ring resonators with this design have been demonstrated having coincidence ratios of 96% but requiring a factor of ~10 increase in the pump power. Through the modification of the coupling design that relies on additional spectral dependence, it is possible to achieve similar coincidence ratios without the increased pumping requirement. This can be achieved by coupling the input waveguide to the ring multiple times, thus creating a Mach-Zehnder interferometer. This coupler design can be used on both sides of the ring resonator so that resonances supported by one of the couplers are suppressed by the other. This is the ideal configuration for a photon-pair source as it can only support the pump photons at the input side while only allowing the generated photons to leave through the output side. Recently, this device has been realized with preliminary results exhibiting the desired spectral dependence and with a coincidence ratio as high as ~ 97% while allowing the pump to be nearly critically coupled to the ring. The demonstrated near unity coincidence ratio infers a near maximal heralding efficiency from the fabricated device. This device has the potential to greatly improve the scalability and performance of quantum computing and communication systems.

Proceedings Article | 19 May 2016 Paper

Efficiently heralded silicon ring resonator photon-pair source

Jeffrey Steidle, Michael Fanto, Christopher Tison, Zihao Wang, Paul Alsing, Stefan Preble

Proceedings Volume 9873, 987304 (2016) https://doi.org/10.1117/12.2223941

KEYWORDS: Resonators, Silicon photonics, Silicon, Waveguides, Quantum computing, Tunable lasers, Four wave mixing, Telecommunications, Bandpass filters, Picosecond phenomena

Read Abstract +

Proceedings Article | 15 March 2016 Paper

Characterizations of InAs quantum dot lasers butt-joint coupled with silicon photonics waveguides

Zihao Wang, Ruizhe Yao, Stefan Preble, Chi-Sen Lee, Wei Guo

Proceedings Volume 9753, 975316 (2016) https://doi.org/10.1117/12.2213084

KEYWORDS: Indium arsenide, Semiconductor lasers, Silicon photonics, Optical interconnects, Waveguides, Wafer bonding, Electroluminescence, Quantum dot lasers, Laser damage threshold, Laser stabilization, Interfaces, Reflectivity, Integrated optics

Read Abstract +

Proceedings Article | 21 May 2015 Paper

High spectral purity silicon ring resonator photon-pair source

Jeffrey Steidle, Michael Fanto, Christopher Tison, Zihao Wang, Stefan Preble, Paul Alsing

Proceedings Volume 9500, 950015 (2015) https://doi.org/10.1117/12.2177179

KEYWORDS: Resonators, Silicon, Picosecond phenomena, Silicon photonics, Waveguides, Sensors, Dispersion, Optical fibers, Fiber couplers, Optical filters

Read Abstract +

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years