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Related Concept Videos

Non-gated Ion Channels01:24

Non-gated Ion Channels

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Ion channels are specialized proteins on the plasma membrane that allow charged ions to pass down their electrochemical gradient. Their main function is to maintain the membrane potential which is critical for cell viability. These channels are either gated or non-gated and can transport more than a thousand ions within milliseconds for the cellular event to occur.
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Ligand-gated ion channels are transmembrane proteins with a channel for ions to pass through and a binding site for a ligand. The channel opens only when a ligand attaches to the binding site.
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Voltage-gated Ion Channels01:26

Voltage-gated Ion Channels

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Voltage-gated ion channels are transmembrane proteins that open and close in response to changes in the membrane potential. They are present on the membranes of all electrically excitable cells such as neurons, heart, and muscle cells.
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Mechanically-gated Ion Channels01:12

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Mechanically-gated ion channels are proteins found in eukaryotic and prokaryotic cell membranes that open in response to mechanical stress. Tension, compression, swelling, and shear stress can alter the conformation of the protein, opening a transmembrane channel that allows the passage of ions for signal transmission. In eukaryotes, mechanically-gated channels are distributed in several regions like the neurons, lungs, skin, bladder, and heart, where they play critical roles in numerous...
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Ligand-gated ion channels are transmembrane proteins that play a vital role in intercellular communication and functions of the nervous system. They allow the influx of ions across the membrane once the neurotransmitter binds, allowing the subsequent transmission of electrical excitation across the neurons. Other ligand-gated ion channels, like the γ-aminobutyric acid (GABA) receptor, permit anions like chloride into the cells on the binding of the GABA molecule. Their entry into the cell...
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G-Protein Gated Ion Channels01:21

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GPCRs are primarily responsible for our sense of smell, taste, and vision.  The binding of a sensory stimulus activates GPCR to stimulate effector proteins, many of which are ion channels in the sensory organs. GPCRs modulate the opening and closing of the target ion channels either directly by binding them, or by releasing second messengers that activate these channels. As ions move across the membrane, the membrane potential is altered, which induces an appropriate response.
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Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
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Quantum gate teleportation between separated qubits in a trapped-ion processor.

Yong Wan1,2, Daniel Kienzler3,2, Stephen D Erickson3,2

  • 1National Institute of Standards and Technology, Boulder, CO 80305, USA. yong.wan@nist.gov.

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Summary
This summary is machine-generated.

Quantum gate teleportation (QGT) enables remote qubit operations essential for scaling quantum computers. This study demonstrates QGT for a controlled-NOT gate in an ion trap, achieving high fidelity.

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Area of Science:

  • Quantum Computing
  • Quantum Information Science
  • Atomic Physics

Background:

  • Large-scale quantum computers necessitate quantum gate operations between distant qubits.
  • Quantum Gate Teleportation (QGT) offers a solution using local operations, classical communication, and entanglement.

Purpose of the Study:

  • To demonstrate Quantum Gate Teleportation (QGT) in a scalable ion trap architecture.
  • To teleport a controlled-NOT (CNOT) gate between spatially separated qubits.

Main Methods:

  • Utilized ion shuttling for qubit movement within the trap.
  • Implemented individually addressed single- and two-qubit gates (same- and mixed-species).
  • Employed real-time conditional operations and single-qubit detections.

Main Results:

  • Successfully demonstrated deterministic QGT of a CNOT gate between separated qubits.
  • Achieved an entanglement fidelity for the teleported CNOT gate in the range (0.845, 0.872) at 95% confidence.
  • Integrated essential tools for scaling trapped-ion quantum computers.

Conclusions:

  • The demonstrated QGT is a crucial step towards building scalable trapped-ion quantum computers.
  • This work validates the combination of advanced techniques for future quantum processors.