Quantum teleportation classical-bit cost

Deterministic exact teleportation of one arbitrary qubit consumes one ebit and two classical bits.

Specification version 1Published 1993-03-291 evidence records

About this problem

The question, scope, and sources behind this Registry record.

Formal question

Determine classical communication needed for deterministic exact teleportation of an arbitrary qubit using prior shared entanglement.

Scope & constraints

input: arbitrary qubit
fidelity: 1
communication: one-way classical
deterministic: true
sharedEntanglement: one Bell pair

Primary sources

Teleporting an unknown quantum state via dual classical and Einstein-Podolsky-Rosen channels — Quantum teleportation classical-bit cost = Teleportation protocol

What we know

Current frontiers derived from accepted Claims.

Exact established value2 classical bits plus 1 shared ebit per arbitrary qubit

The accepted equality closes this optimization result.

Claims

Assertions tied to evidence, attribution, and review.

2026

CLM-QUANT-003304-1= 2 classical bits plus 1 shared ebit per arbitrary qubitEXACT VALUEThe cited theorem establishes 2 classical bits plus 1 shared ebit per arbitrary qubit under the recorded assumptions.Source: Teleporting an unknown quantum state via dual classical and Einstein-Podolsky-Rosen channels — Quantum teleportation classical-bit cost = ↗

PROVEN

Timeline

The frontier as it changed over time.

How this frontier is derived

Only accepted Claims matching the current specification contribute to the displayed bounds. Strict inequalities remain open; contradictory Claims require editorial review.

—No breakthrough events recorded yetEvents appear here when an accepted Claim tightens a bound or closes the frontier.

Specification

What question is being asked?

Constraints: input=arbitrary qubit · fidelity=1 · communication=one-way classical · deterministic=true · sharedEntanglement=one Bell pair

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Corrections & disputes

Record history

No unresolved corrections or disputes are recorded for this published version.

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Editorial status

Evidence-backed record

1 accepted Claim, with 1 linked evidence records.

Human-reviewed · No AI-only claims

Verified prizes & bounties

Active verified incentives

No active verified bounties are linked to this Limit.

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Reproducibility

Machine-checked history

No accepted machine-checked reproductions are recorded for this Limit.

Cite this LimitLimits Registry. LR-003304. Quantum teleportation classical-bit cost. 2026.