Catalog — QPU record · IonQ · Trapped ion
IonQ Tempo
IonQ Tempo is a trapped ion gate-based processor by IonQ with a disclosed qubit count detailed below (2023). Below: every publicly disclosed figure with its source, method, and vendor-claim status — plus what is not disclosed, recorded as findings.
Measurement records4 disclosed · 6 not disclosed · 3 sources
Select a figure to open its record
Qubit count (physical_qubit_count)100 (vendor product page lists 100 qubits as the Tempo spec/target) qubitsvendor claim
Vendor claim
- Method
- VENDOR_UNSPECIFIED
- Notes
- Third-party coverage headlines Tempo as a '100-qubit' system (quantumcomputingreport.com, 'IonQ Reaches #AQ 64 Milestone on 100-Qubit Tempo System'). IonQ's #AQ 64 blog says the computational register progressed 'from 36 to 64 qubits' on the development system but does not state Tempo's final physical count in the fetched text.
- Citation key
[ionq/ionq-tempo:physical-qubit-count:2026-08-19]
Algorithmic qubits (#AQ) (algorithmic_qubits_AQ)64 (achieved on a Tempo development system) #AQvendor claim
Vendor claim
- Source
- IonQ Achieves Record Breaking Quantum Performance Milestone of #AQ 64 (press release) · published 2025-09-25
- Method
- IonQ #AQ application benchmark suite; blog states it was achieved in a single ion chain with all-to-all connectivity, using 'dramatically improved error mitigation and compiler capabilities'
- Notes
- Also detailed in IonQ blog dated 2025-10-13 ('highest validated algorithmic qubit score achieved on a quantum system to date', 'three months ahead of schedule'). Tempo was originally announced 2023-09-27 as 'expected to demonstrate record-breaking #AQ 64'. #AQ is distinct from physical qubit count (100).
- Citation key
[ionq/ionq-tempo:algorithmic-qubits-aq:2026-08-19]
Two-qubit gate quality (two_qubit_gate_fidelity)99.9% (vendor page states '99.9% fidelity' as a Tempo figure; measurement method and aggregation not stated; unclear if target or measured) %vendor claim
Vendor claim
- Method
- not stated
- Aggregation
- not stated
- Notes
- Treat with caution: page is commercially oriented and does not label the fidelity as 1Q vs 2Q or give benchmarking method.
- Citation key
[ionq/ionq-tempo:two-qubit-gate-fidelity:2026-08-19]
Single-qubit gate quality (one_qubit_gate_fidelity)not publicly disclosed
Not publicly disclosed — checked 2026-08-19
- Finding
- No public disclosure found. This is a recorded, dated finding — we do not substitute an estimate or borrow a figure from a sibling device.
- Sources queried
- ionq.com/quantum-systems/tempo; IonQ #AQ 64 press release (investors.ionq.com); IonQ blog 2025-10-13; docs.ionq.com
Coherence (T1_T2_coherence)not publicly disclosed
Not publicly disclosed — checked 2026-08-19
- Finding
- No public disclosure found. This is a recorded, dated finding — we do not substitute an estimate or borrow a figure from a sibling device.
- Sources queried
- ionq.com/quantum-systems/tempo; IonQ press releases and blog; docs.ionq.com
Readout (readout_SPAM_fidelity)not publicly disclosed
Not publicly disclosed — checked 2026-08-19
- Finding
- No public disclosure found. This is a recorded, dated finding — we do not substitute an estimate or borrow a figure from a sibling device.
- Sources queried
- ionq.com/quantum-systems/tempo; IonQ press releases and blog
Gate duration (two_qubit_gate_duration)not publicly disclosed
Not publicly disclosed — checked 2026-08-19
- Finding
- No public disclosure found. This is a recorded, dated finding — we do not substitute an estimate or borrow a figure from a sibling device.
- Sources queried
- ionq.com/quantum-systems/tempo; IonQ blog 2025-10-13; docs.ionq.com
- Notes
- Vendor page claims 'faster gate speeds' and 'mid-circuit measurement' capabilities without numbers.
Native gate set (native_gate_set)not publicly disclosed
Not publicly disclosed — checked 2026-08-19
- Finding
- No public disclosure found. This is a recorded, dated finding — we do not substitute an estimate or borrow a figure from a sibling device.
- Sources queried
- docs.ionq.com/guides/getting-started-with-native-gates
- Notes
- IonQ's native-gates documentation covers only Aria (MS gate) and Forte (ZZ gate) generations as of retrieval.
Pricing model (cloud_access_and_pricing)not publicly disclosed
Not publicly disclosed — checked 2026-08-19
- Finding
- No public disclosure found. This is a recorded, dated finding — we do not substitute an estimate or borrow a figure from a sibling device.
- Sources queried
- docs.aws.amazon.com/braket/latest/developerguide/braket-devices.html; learn.microsoft.com/en-us/azure/quantum/provider-ionq; ionq.com/quantum-systems/tempo
- Notes
- Not on the AWS Braket device list nor the Azure Quantum IonQ target list as of 2026-08-19; vendor page routes interest to an 'Inquire about IonQ Tempo' contact form. No public pricing.
Announced year (announced_year)2023 (unveiled Sept 27, 2023, alongside Forte Enterprise, as a rack-mounted system 'expected to demonstrate record-breaking #AQ 64')vendor claim
Vendor claim
- Source
- IonQ Unveils Forte Enterprise and Tempo, Rack-Mounted Enterprise-Grade Quantum Computers (press release) · published 2023-09-27
- Method
- VENDOR_UNSPECIFIED
- Notes
- #AQ 64 milestone reached Sept/Oct 2025 on a development system.
- Citation key
[ionq/ionq-tempo:announced-year:2026-08-19]
QPU137 is independent and is not affiliated with, endorsed by, or sponsored by IonQ. Figures above are public disclosures recorded with their sources on 2026-08-19; vendor claims are labeled as such and may not be directly comparable across measurement methods — see methodology.