Stephen D. Erickson
YOU?
Author Swipe
View article: Electromagnetically-Induced-Transparency Cooling with a Tripod Structure in a Hyperfine Trapped Ion with Mixed-Species Crystals
Electromagnetically-Induced-Transparency Cooling with a Tripod Structure in a Hyperfine Trapped Ion with Mixed-Species Crystals Open
Cooling of atomic motion is a crucial tool for many branches of atomic physics, ranging from fundamental physics explorations to quantum information and sensing. For trapped ions, electromagnetically-induced-transparency (EIT) cooling has …
View article: Indirect Cooling of Weakly Coupled Trapped-Ion Mechanical Oscillators
Indirect Cooling of Weakly Coupled Trapped-Ion Mechanical Oscillators Open
Cooling the motion of trapped ions to near the quantum ground state is crucial for many applications in quantum information processing and quantum metrology. However, certain motional modes of trapped-ion crystals can be difficult to cool …
View article: Passive dynamical decoupling of trapped ion qubits and qudits
Passive dynamical decoupling of trapped ion qubits and qudits Open
We propose a method to dynamically decouple every magnetically sensitive hyperfine sublevel of a trapped ion from magnetic field noise, simultaneously, using integrated circuits to adiabatically rotate its local quantization field. These i…
View article: Indirect Cooling of Weakly Coupled Trapped-Ion Mechanical Oscillators
Indirect Cooling of Weakly Coupled Trapped-Ion Mechanical Oscillators Open
Cooling the motion of trapped ions to near the quantum ground state is crucial for many applications in quantum information processing and quantum metrology. However, certain motional modes of trapped-ion crystals can be difficult to cool …
View article: Coherent coupling and non-destructive measurement of trapped-ion mechanical oscillators
Coherent coupling and non-destructive measurement of trapped-ion mechanical oscillators Open
Precise quantum control and measurement of several harmonic oscillators, such as the modes of the electromagnetic field in a cavity or of mechanical motion, are key for their use as quantum platforms. The motional modes of trapped ions can…
View article: High-Fidelity Indirect Readout of Trapped-Ion Hyperfine Qubits
High-Fidelity Indirect Readout of Trapped-Ion Hyperfine Qubits Open
We propose and demonstrate a protocol for high-fidelity indirect readout of trapped ion hyperfine qubits, where the state of a $^9\text{Be}^+$ qubit ion is mapped to a $^{25}\text{Mg}^+$ readout ion using laser-driven Raman transitions. By…
View article: Resource-Efficient Dissipative Entanglement of Two Trapped-Ion Qubits
Resource-Efficient Dissipative Entanglement of Two Trapped-Ion Qubits Open
We demonstrate a simplified method for dissipative generation of an entangled state of two trapped-ion qubits. Our implementation produces its target state faster and with higher fidelity than previous demonstrations of dissipative entangl…
View article: Dissipative preparation of W states in trapped ion systems
Dissipative preparation of W states in trapped ion systems Open
We present protocols for dissipative entanglement of three trapped-ion qubits and discuss a scheme that uses sympathetic cooling as the dissipation mechanism. This scheme relies on tailored destructive interference to generate any one of s…
View article: Quantum Harmonic Oscillator Spectrum Analyzers
Quantum Harmonic Oscillator Spectrum Analyzers Open
Characterization and suppression of noise are essential for the control of harmonic oscillators in the quantum regime. We measure the noise spectrum of a quantum harmonic oscillator from low frequency to near the oscillator resonance by se…
View article: Quantum Logic Spectroscopy with Ions in Thermal Motion
Quantum Logic Spectroscopy with Ions in Thermal Motion Open
A mixed-species geometric phase gate has been proposed for implementing quantum logic spectroscopy on trapped ions, which combines probe and information transfer from the spectroscopy to the logic ion in a single pulse. We experimentally r…
View article: Quantum gate teleportation between separated qubits in a trapped-ion processor
Quantum gate teleportation between separated qubits in a trapped-ion processor Open
Teleporting a trapped-ion quantum gate Gating—controlling the state of one qubit conditioned on the state of another—is a key procedure in all quantum information processors. As the scale of quantum processors increases, the qubits will ne…
View article: Chained Bell Inequality Experiment with High-Efficiency Measurements
Chained Bell Inequality Experiment with High-Efficiency Measurements Open
We report correlation measurements on two ^{9}Be^{+} ions that violate a chained Bell inequality obeyed by any local-realistic theory. The correlations can be modeled as derived from a mixture of a local-realistic probabilistic distributio…