461 citations · 2.2k across the 21 of their papers we have counts for
22 papers
Autonomous agentic design for photonics
Prashanta Kharel, Amin Khavasi, Xinzhong Chen +1
We introduce an automated, agent-driven approach to the design of photonic devices. We instruct large language models (LLMs) to solve photonic design problems, given access to soft…
Integrated Electro-Optic Isolator on Thin Film Lithium Niobate
Mengjie Yu, Rebecca Cheng, Christian Reimer +9
Optical isolator is an indispensable component of almost any optical system and is used to protect a laser from unwanted reflections for phase-stable coherent operation. The develo…
Simultaneous Brillouin and piezoelectric coupling to a high-frequency bulk acoustic resonator
Taekwan Yoon, David Mason, Vijay Jain +7
Bulk acoustic resonators support robust, long-lived mechanical modes, capable of coupling to various quantum systems. In separate works, such devices have achieved strong coupling…
Reduced Material Loss in Thin-film Lithium Niobate Waveguides
Amirhassan Shams-Ansari, Guanhao Huang, Lingyan He +12
Thin-film lithium niobate has shown promise for scalable applications ranging from single-photon sources to high-bandwidth data communication systems. Realization of the next gener…
Micro-fabricated mirrors with finesse exceeding one million
Naijun Jin, Charles A. McLemore, David Mason +7
The Fabry-Pérot resonator is one of the most widely used optical devices, enabling scientific and technological breakthroughs in diverse fields including cavity QED, optical clocks…
Femtosecond Pulse Generation via an Integrated Electro-Optic Time Lens
Mengjie Yu, Christian Reimer, David Barton +12
Integrated femtosecond pulse and frequency comb sources are critical components for a wide range of applications. The leading approaches for on-chip pulse generation rely on mode l…
Breaking voltage-bandwidth limits in integrated lithium niobate modulators using micro-structured electrodes
Prashanta Kharel, Christian Reimer, Kevin Luke +2
Electro-optic modulators with low voltage and large bandwidth are crucial for both analog and digital communications. Recently, thin-film lithium niobate modulators have enable dra…
Wafer-scale low-loss lithium niobate photonic integrated circuits
Kevin Luke, Prashanta Kharel, Christian Reimer +3
Thin-film lithium niobate (LN) photonic integrated circuits (PICs) could enable ultrahigh performance in electro-optic and nonlinear optical devices. To date, realizations have bee…
Shaping nonlinear optical response using nonlocal forward Brillouin interactions
Shai Gertler, Prashanta Kharel, Eric A. Kittlaus +2
We grow accustomed to the notion that optical susceptibilities can be treated as a local property of a medium. In the context of nonlinear optics, both Kerr and Raman processes are…
Microwave filtering using forward Brillouin scattering in photonic-phononic emit-receive devices
Shai Gertler, Eric A. Kittlaus, Nils T. Otterstrom +2
Microwave photonic systems are compelling for their ability to process signals at high frequencies and over extremely wide bandwidths as a basis for next generation communication a…
Multimode strong coupling in cavity optomechanics
Prashanta Kharel, Yiwen Chu, Eric A. Kittlaus +3
Optomechanical systems show great potential as quantum transducers and information storage devices for use in future hybrid quantum networks and offer novel strategies for quantum…
High-frequency cavity optomechanics using bulk acoustic phonons
Prashanta Kharel, Glen I. Harris, Eric A. Kittlaus +4
To date, micro- and nano-scale optomechanical systems have enabled many proof-of-principle quantum operations through access to high-frequency (GHz) phonon modes that are readily c…
Nonreciprocal Inter-band Brillouin Modulation
Eric A. Kittlaus, Nils T. Otterstrom, Prashanta Kharel +2
Achieving nonreciprocal light propagation in photonic circuits is essential to control signal crosstalk and optical back-scatter. However, realizing high-fidelity nonreciprocity in…
Ultra-high-Q phononic resonators on-chip at cryogenic temperatures
Prashanta Kharel, Yiwen Chu, Michael Power +3
Long-lived, high-frequency phonons are valuable for applications ranging from optomechanics to emerging quantum systems. For scientific as well as technological impact, we seek hig…
Creation and control of multi-phonon Fock states in a bulk acoustic wave resonator
Yiwen Chu, Prashanta Kharel, Taekwan Yoon +3
Quantum states of mechanical motion can be important resources for quantum information, metrology, and studies of fundamental physics. Recent demonstrations of superconducting qubi…
Integrated RF-photonic Filters via Photonic-Phononic Emit-Receive Operations
Eric A. Kittlaus, Prashanta Kharel, Nils T. Otterstrom +2
The creation of high-performance narrowband filters is of great interest for many RF-signal processing applications. To this end, numerous schemes for electronic, MEMS-based, and m…
Bulk crystalline optomechanics
W. H. Renninger, P. Kharel, R. O. Behunin +1
Brillouin processes couple light and sound through optomechanical three-wave interactions. Within bulk solids, this coupling is mediated by the intrinsic photo-elastic material res…
Quantum acoustics with superconducting qubits
Yiwen Chu, Prashanta Kharel, William H. Renninger +4
The ability to engineer and manipulate different types of quantum mechanical objects allows us to take advantage of their unique properties and create useful hybrid technologies. T…
Engineering dissipation with phononic spectral hole burning
R. O. Behunin, P. Kharel, W. H. Renninger +1
Optomechanics, nano-electromechanics, and integrated photonics have brought about a renaissance in phononic device physics and technology. Central to this advance are devices and m…
Noise and dynamics in forward Brillouin interactions
Prashanta Kharel, Ryan Behunin, William Renninger +1
In this paper, we explore the spatio-temporal dynamics of spontaneous and stimulated forward Brillouin scattering. This general treatment incorporates the optomechanical coupling p…
Long-lived guided phonons in fiber by manipulating two-level systems
R. O. Behunin, P. Kharel, W. H. Renninger +4
The synthesis of ultra-long lived acoustic phonons in a variety of materials and device geometries could enable a range of new coherent information processing and sensing technolog…
On-Chip Detection of Entangled Photons by Scalable Integration of Single-Photon Detectors
Faraz Najafi, Jacob Mower, Nicholas Harris +8
Photonic integrated circuits (PICs) have emerged as a scalable platform for complex quantum technologies using photonic and atomic systems. A central goal has been to integrate pho…