Philippe Goldner
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View article: Optical investigation of ultra-slow spin relaxation in $^{171}$Yb$^{3+}$:Y$_2$SiO$_5$ single crystals
Optical investigation of ultra-slow spin relaxation in $^{171}$Yb$^{3+}$:Y$_2$SiO$_5$ single crystals Open
We present a comprehensive study of spin relaxation dynamics at cryogenic temperatures in a rare-earth-doped crystal used for quantum memory applications: $^{171}$Yb:Y$_2$SiO$_5$. Spin relaxation is indeed a major limiting factor for both …
View article: Broadband and long-duration optical memory in <sup>171</sup> Yb <sup>3+</sup> :Y <sub>2</sub> SiO <sub>5</sub>
Broadband and long-duration optical memory in <sup>171</sup> Yb <sup>3+</sup> :Y <sub>2</sub> SiO <sub>5</sub> Open
Optical quantum memories are essential components for realizing the full potential of quantum networks. Among these, rare-earth-doped crystal memories stand out due to their large multimode storage capabilities. To maximize the multimode c…
View article: Individual solid-state nuclear spin qubits with coherence exceeding seconds
Individual solid-state nuclear spin qubits with coherence exceeding seconds Open
View article: Week-long-lifetime microwave spectral holes in an erbium-doped scheelite crystal at millikelvin temperature
Week-long-lifetime microwave spectral holes in an erbium-doped scheelite crystal at millikelvin temperature Open
Rare-earth-ions (REI) doped crystals have remarkable optical and spin properties characterized by narrow homogeneous linewidths, which can be studied despite the large inhomogeneous broadening of the ensemble line through spectral hole bur…
View article: Enhanced magnetic field sensitivity of shallow NV$^-$ ensembles via high-temperature implantation
Enhanced magnetic field sensitivity of shallow NV$^-$ ensembles via high-temperature implantation Open
Dense and shallow ensembles of negatively charged nitrogen-vacancy centers (NV$^-$) with good optical and spin properties play a key role in the performance enhancement of diamond-based quantum sensors. Ion implantation enables precise con…
View article: High-resolution optical spectroscopy of europium nitrate hexahydrate crystals
High-resolution optical spectroscopy of europium nitrate hexahydrate crystals Open
View article: Optically detected nuclear magnetic resonance of coherent spins in a molecular complex
Optically detected nuclear magnetic resonance of coherent spins in a molecular complex Open
Nuclear magnetic resonance (NMR) is a powerful tool for applications ranging from chemical analysis to quantum information processing. Achieving optical initialization and detection of molecular nuclear spins promises new opportunities - i…
View article: Long-lived optical coherence and spin lifetimes in Eu3+:Y2O3 oxide ceramics for quantum memories
Long-lived optical coherence and spin lifetimes in Eu3+:Y2O3 oxide ceramics for quantum memories Open
View article: Ultralow-Temperature Thermodynamics and Optical Coherence of Narrow Linewidth Optical Emitters
Ultralow-Temperature Thermodynamics and Optical Coherence of Narrow Linewidth Optical Emitters Open
The coherence properties of optical emitters in crystals are critical for quantum technologies and optical frequency metrology. Cooling to sub-kelvin temperatures can significantly enhance their coherence, making it essential to identify t…
View article: Sub-second spin and lifetime-limited optical coherences in $^{171}$Yb$^{3+}$:CaWO$_4$
Sub-second spin and lifetime-limited optical coherences in $^{171}$Yb$^{3+}$:CaWO$_4$ Open
Optically addressable solid-state spins have been extensively studied for quantum technologies, offering unique advantages for quantum computing, communication, and sensing. Advancing these applications is generally limited by finding mate…
View article: All-microwave spectroscopy and polarization of individual nuclear spins in a solid
All-microwave spectroscopy and polarization of individual nuclear spins in a solid Open
Pushing the sensitivity of nuclear magnetic resonance spectroscopy to the single spin level would have a major impact in chemistry and biology and is the goal of intense research efforts. We report magnetic resonance spectroscopy measureme…
View article: Erbium-doped yttrium oxide thin films grown by chemical vapor deposition for quantum technologies
Erbium-doped yttrium oxide thin films grown by chemical vapor deposition for quantum technologies Open
The obtention of quantum-grade rare-earth-doped oxide thin films that can be integrated with optical cavities and microwave resonators is of great interest for the development of scalable quantum devices. Among the different growth methods…
View article: Ultralong-lived Coherent States in Eu$^{3+}$:Y$_2$O$_3$ Optical Ceramics for Quantum Memories
Ultralong-lived Coherent States in Eu$^{3+}$:Y$_2$O$_3$ Optical Ceramics for Quantum Memories Open
Rare earth ions (REI) in solid materials are among the leading systems for quantum technology applications. However, developing practical REI quantum devices with long-lived coherent states remains challenging due to great growth difficult…
View article: Sub-MHz homogeneous linewidth in epitaxial Y<sub>2</sub>O<sub>3</sub>: Eu<sup>3+</sup> thin film on silicon
Sub-MHz homogeneous linewidth in epitaxial Y<sub>2</sub>O<sub>3</sub>: Eu<sup>3+</sup> thin film on silicon Open
Thin films provide nanoscale confinement together with compatibility with photonic and microwave architectures, making them ideal candidates for chip-scale quantum devices. In this work, we propose a thin film fabrication approach yielding…
View article: Homogeneous linewidth behavior of narrow optical emitters at sub-kelvin temperatures
Homogeneous linewidth behavior of narrow optical emitters at sub-kelvin temperatures Open
We explore the properties of ultranarrow spectral holes in ensembles of solid-state emitters in crystals over a range of sub-kelvin temperatures, as a new step toward leveraging their exceptional coherence properties more effectively. As a…
View article: Electron paramagnetic resonance spectroscopy of a scheelite crystal using microwave-photon counting
Electron paramagnetic resonance spectroscopy of a scheelite crystal using microwave-photon counting Open
Counting the microwave photons emitted by an ensemble of electron spins when they relax radiatively has recently been introduced as a sensitive new method for electron paramagnetic resonance spectroscopy at millikelvin temperatures. Here, …
View article: Homogeneous Linewidth Behaviour of Narrow Optical Emitters at Sub-kelvin Temperatures
Homogeneous Linewidth Behaviour of Narrow Optical Emitters at Sub-kelvin Temperatures Open
We explore the properties of ultra-narrow spectral holes in ensembles of solid-state emitters in crystals over a range of sub-kelvin temperatures, with a focus on their potential application in frequency stabilization schemes as an alterna…
View article: Erbium doped yttrium oxide thin films grown by chemical vapour deposition for quantum technologies
Erbium doped yttrium oxide thin films grown by chemical vapour deposition for quantum technologies Open
The obtention of quantum-grade rare-earth doped oxide thin films that can be integrated with optical cavities and microwave resonators is of great interest for the development of scalable quantum devices. Among the different growth methods…
View article: Incoherent Measurement of Sub-10 kHz Optical Linewidths
Incoherent Measurement of Sub-10 kHz Optical Linewidths Open
Quantum state lifetimes $T_2$, or equivalently homogeneous linewidths $Γ_h = 1/πT_2$, are a key parameter for understanding decoherence processes in quantum systems and assessing their potential for applications in quantum technologies. Th…
View article: Anomalous Subkelvin Thermal Frequency Shifts of Ultranarrow Linewidth Solid State Emitters
Anomalous Subkelvin Thermal Frequency Shifts of Ultranarrow Linewidth Solid State Emitters Open
We investigate the frequency response of narrow spectral holes in a doped crystal structure as a function of temperature below 1 K. We identify a particular regime in which this response significantly deviates from the expected two-phonon …
View article: Spin-bearing molecules as optically addressable platforms for quantum technologies
Spin-bearing molecules as optically addressable platforms for quantum technologies Open
Efforts to harness quantum hardware relying on quantum mechanical principles have been steadily progressing. The search for novel material platforms that could spur the progress by providing new functionalities for solving the outstanding …
View article: Individual solid-state nuclear spin qubits with coherence exceeding seconds
Individual solid-state nuclear spin qubits with coherence exceeding seconds Open
The ability to coherently control and read out qubits with long coherence times in a scalable system is a crucial requirement for any quantum processor. Nuclear spins in the solid state have shown great promise as long-lived qubits. Contro…
View article: Rare Earth‐Diamond Hybrid Structures for Optical Quantum Technologies
Rare Earth‐Diamond Hybrid Structures for Optical Quantum Technologies Open
Diamond containing nitrogen‐vacancy centers (NV − ) is one of the most investigated materials for quantum technologies, because of this system's exceptional spin properties. Although the NV − optical transition is very bright, it suffers f…
View article: Month-long-lifetime microwave spectral holes in an erbium-doped scheelite crystal at millikelvin temperature
Month-long-lifetime microwave spectral holes in an erbium-doped scheelite crystal at millikelvin temperature Open
Rare-earth-ion (REI) ensembles in crystals have remarkable optical and spin properties characterized by narrow homogeneous linewidths relative to the inhomogeneous ensemble broadening. This makes it possible to precisely tailor the ensembl…
View article: Laser site-selective spectroscopy and magnetic hyperfine splittings of Ho3+ doped Y2SiO5
Laser site-selective spectroscopy and magnetic hyperfine splittings of Ho3+ doped Y2SiO5 Open
View article: Opto-RF transduction in Er3+:CaWO4
Opto-RF transduction in Er3+:CaWO4 Open
International audience
View article: Rare-earth doped yttrium silicate (Y2SiO5) thin films grown by chemical vapour deposition for quantum technologies
Rare-earth doped yttrium silicate (Y2SiO5) thin films grown by chemical vapour deposition for quantum technologies Open
View article: Hot ion implantation to create dense NV center ensembles in diamond
Hot ion implantation to create dense NV center ensembles in diamond Open
Creating dense and shallow nitrogen-vacancy (NV) ensembles with good spin properties is a prerequisite for developing diamond-based quantum sensors exhibiting better performance. Ion implantation is a key enabling tool for precisely contro…
View article: Optical coherence and spin population dynamics in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Yb</mml:mi><mml:none/><mml:mrow><mml:mn>3</mml:mn><mml:mo>+</mml:mo></mml:mrow><mml:mprescripts/><mml:none/><mml:mn>171</mml:mn></mml:mmultiscripts></mml:math>:<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi mathvariant="normal">Y</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>SiO</mml:mi><mml:mn>5</mml:mn></mml:msub></mml:mrow></mml:math> single crystals
Optical coherence and spin population dynamics in : single crystals Open
Yb3+171-doped Y2SiO5 (YSO) crystals are a promising platform for optical quantum memories in long-distance quantum communications. The relevance of this material lies in Yb171 long optical and spin coherence times, along with a large hyper…
View article: Rare-earth doped yttrium silicate (Y2SiO5) thin films grown by chemical vapour deposition for quantum technologies
Rare-earth doped yttrium silicate (Y2SiO5) thin films grown by chemical vapour deposition for quantum technologies Open
Yttrium orthosilicate (Y2SiO5 - YSO) is one of the most promising crystals to host rare-earth (RE) ions for quantum technologies applications. In this matrix, they indeed exhibit narrow optical and spin linewidths that can be exploited to …