Ultra-low Frequency Noise External Cavity Diode Laser Systems for Quantum Applications

Abstract

We present two distinct ultra-low frequency noise lasers at 729 nm with a fast frequency noise of 30 Hz^2/Hz, corresponding to a Lorentzian linewidth of 0.1 kHz. The characteristics of both lasers, which are based on different types of laser diodes, are investigated using experimental and theoretical analysis with a focus on identifying the advantages and disadvantages of each type of system. Specifically, we study the differences and similarities in mode behaviour while tuning frequency noise and linewidth reduction. Furthermore, we demonstrate the locking capability of these systems on medium-finesse cavities. The results provide insights into the unique operational characteristics of these ultra-low noise lasers and their potential applications in quantum technology that require high levels of control fidelity.

Keywords: ECDL, ultra-low frequency noise, linewidth reduction, quantum applications

References in corpus (16)

• The Quantum Internet
• An Elementary Quantum Network of Single Atoms in Optical Cavities
• An ${}^{27}$Al${}^{+}$ quantum-logic clock with systematic uncertainty below $10^{-18}$
• Realization of a scalable Shor algorithm
• A compact ion-trap quantum computing demonstrator
• Compact, thermal-noise-limited optical cavity for diode laser stabilization at 1 x 10-15
• Multi-bit gates for quantum computing
• Universal gate-set for trapped-ion qubits using a narrow linewidth diode laser
• Sensitivity of quantum gate fidelity to laser phase and intensity noise
• Phase-Locked, Low-Noise, Frequency Agile Titanium: Sapphire Lasers for Simultaneous Atom Interferometers
• Semiconductor Laser Linewidth Theory Revisited
• The effect of fast noise on the fidelity of trapped-ions quantum gates
• Passive intrinsic-linewidth narrowing of ultraviolet extended-cavity diode laser by weak optical feedback
• A self-injection locked DBR laser for laser cooling of beryllium ions
• Phase-stabilized UV light at 267 nm through twofold second harmonic generation
• Robust kHz-linewidth distributed Bragg reflector laser with optoelectronic feedback

Cited by in corpus (2)

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